{"id":20,"date":"2011-01-27T16:16:04","date_gmt":"2011-01-27T16:16:04","guid":{"rendered":"http:\/\/www.kritiknetz.de\/bgess\/"},"modified":"2026-04-01T07:11:16","modified_gmt":"2026-04-01T07:11:16","slug":"research","status":"publish","type":"page","link":"https:\/\/www.bgess.de\/index.php\/research\/","title":{"rendered":"Research"},"content":{"rendered":"

Research interests<\/h2>\n

Stochastic partial differential equations (SPDEs), nonlinear partial differential equations, random dynamical systems, interacting particle systems, machine learning, porous media equations, scalar conservation laws, synchronization by noise, regularization by noise, rough paths.<\/span><\/p>\n

Publications<\/h2>\n

Preprints<\/h1>\n
    \n
  1. The Incompressible Navier–Stokes–Fourier System with Thermal Noise<\/strong>
    \nwith Max Sauerbrey, Zhengyan Wu
    \navailable on arXiv \"\"<\/a>.<\/li>\n
  2. Large Spikes in Stochastic Gradient Descent: A Large-Deviations View<\/strong>
    \nwith Daniel Heydecker
    \navailable on arXiv     \"\"<\/a>.<\/li>\n
  3. The Porous Medium Equation: Multiscale Integrability in Large Deviations<\/strong>
    \nwith Daniel Heydecker
    \navailable on arXiv     \"\"<\/a>.<\/li>\n
  4. Probabilistically Strong Solutions to Stochastic Euler Equations<\/strong>
    \nwith Robert Lasarzik
    \navailable on arXiv     \"\"<\/a>.<\/li>\n
  5. Ergodicity for SPDEs driven by divergence-free transport noise<\/strong>
    \nwith Rishabh S. Gvalani, Adrian Martini
    \navailable on arXiv     \"\"<\/a>.<\/li>\n
  6. Matching Large Deviation Bounds of the Zero-Range Process in the whole space<\/strong>
    \nwith Benjamin Fehrman, Daniel Heydecker
    \navailable on arXiv\u00a0    \"\"<\/a>.<\/li>\n
  7. THINNs: Thermodynamically Informed Neural Networks<\/strong>
    \nwith Javier Castro
    \navailable on arXiv\u00a0    \"\"<\/a>.<\/li>\n
  8. Random dynamical systems for McKean–Vlasov SDEs via rough path theory<\/strong>
    \nwith Rishabh S. Gvalani, Shanshan Hu
    \navailable on arXiv\u00a0    \"\"<\/a>.<\/li>\n
  9. A quantitative central limit theorem for the simple symmetric exclusion process<\/strong>
    \nwith Vitalii Konarovskyi
    \navailable on arXiv\u00a0    \"\"<\/a>.<\/li>\n
  10. Higher Order Fluctuation Expansions for Nonlinear Stochastic Heat Equations in Singular Limits<\/strong>
    \nwith Zhengyan Wu, Rangrang Zhang
    \navailable on arXiv\u00a0    \"\"<\/a>.<\/li>\n
  11. Optimal Regularity in Time and Space for Nonlocal Porous Medium Type <\/strong>Equations<\/strong>
    \nwith Jonas Sauer
    \navailable on arXiv     \"\"<\/a>.<\/li>\n
  12. Landau-Lifschitz-Navier-Stokes Equations: Large Deviations and Relationship to the Energy Equality<\/strong>
    \nwith Daniel Heydecker, Zhengyan Wu
    \navailable on arXiv     \"\"<\/a>.<\/li>\n
  13. Ergodicity and random dynamical systems for conservative SPDEs<\/strong>
    \nwith Benjamin Fehrman, Rishabh S. Gvalani
    \navailable on arXiv:     \"\"<\/a>.<\/li>\n<\/ol>\n

    Publications in peer-reviewed journals<\/h1>\n
      \n
    1. A Rescaled Zero-Range Process for the Porous Medium Equation: Hydrodynamic Limit, Large Deviations and Gradient Flow<\/strong>
      \nwith Daniel Heydecker
      \nto appear in Communications on Pure and Applied Mathematics, <\/em>arXiv:       \"\"<\/a>.<\/li>\n
    2. Low temperature expansion for the Euclidean \u03a6^4_2-measure<\/strong>
      \nwith Kihoon Seong, Pavlos Tsatsoulis
      \nto appear in Transactions of the AMS (TAMS)<\/em>, arXiv       \"\"<\/a>.<\/li>\n
    3. Conservative stochastic PDE and fluctuations of the symmetric simple exclusion process<\/strong>
      \nwith Nicolas Dirr, Benjamin Fehrman
      \nto appear in Communications in Mathematical Physics<\/em>, available on arXiv:       \"\"<\/a>.<\/li>\n
    4. Existence of martingale solutions to a stochastic kinetic model of chemotaxis<\/strong>
      \nwith Sebastian Herr, Anne Niesdroy
      \nto appear in Nonlinear Differential Equations and Applications NoDEA<\/em>, available on arXiv       \"\"<\/a>.<\/li>\n
    5. Convergence rates for momentum stochastic gradient descent with noise of machine learning type<\/strong>
      \nwith Sebastian Kassing
      \nto appear in Mathematical Programming (MAPR),<\/em> available on arXiv:       \"\"<\/a>.<\/li>\n
    6. Conservative stochastic PDEs on the whole space<\/strong>
      \nwith Benjamin Fehrman
      \nto appear in Stochastics and Partial Differential Equations: Analysis and Computations<\/em>, arXiv\u00a0      \"\"<\/a>.<\/li>\n
    7. Stabilization by transport noise and enhanced dissipation in the Kraichnan model<\/strong>
      \nwith Ivan Yaroslavtsev
      \nJ. Evol. Equ. (2025)25:42<\/em>, arXiv:       \"\"<\/a>.<\/li>\n
    8. Conservative SPDEs as fluctuating mean field limits of stochastic gradient descent<\/strong>
      \nwith Rishabh S. Gvalani, Vitalii Konarovskyi
      \nto appear in Probability Theory and Related Fields (PTRF),<\/em> arXiv:       \"\"<\/a>.<\/li>\n
    9. Stochastic partial differential equations arising in self-organized criticality<\/strong>
      \nwith \u013dubom\u00edr Ba\u0148as, Marius Neu\u00df
      \nto appear in The Annals of Applied Probability (AAoP),<\/em> arXiv:       \"\"<\/a>.<\/li>\n
    10. Solutions to the stochastic thin-film equation for initial values with non-full support<\/strong>
      \nwith Konstantinos Dareiotis, Manuel V. Gnann, Max Sauerbrey
      \nto appear in Transactions of the American Mathematical Society<\/em>, arXiv:       \"\"<\/a>.<\/li>\n
    11. Stochastic Modified Flows for Riemannian Stochastic Gradient Descent<\/strong>
      \nwith Sebastian Kassing, Nimit Rana
      \nto appear in SIAM Journal on Control and Optimization (SICON)<\/em>, arXiv:       \"\"<\/a>.<\/li>\n
    12. Lyapunov exponents and synchronisation by noise for systems of SPDEs<\/strong>
      \nwith Pavlos Tsatsoulis
      \nto appear in Ann. Probab., <\/em>arXiv:       \"\"<\/a>.<\/li>\n
    13. Stochastic Modified Flows, Mean-Field Limits and Dynamics of Stochastic Gradient Descent<\/strong>
      \nwith Sebastian Kassing, Vitalii Konarovskyi
      \nto appear in J. Mach. Learn. Res. (JMLR)<\/em>, arXiv:       \"\"<\/a>.<\/li>\n
    14. Well-posedness of the Dean-Kawasaki and the nonlinear Dawson-Watanabe<\/strong>
      \nequation with correlated noise<\/strong>
      \nwith Benjamin Fehrman
      \nto appear in Arch. Ration. Mech. Anal. (ARMA)<\/em>, arXiv:       \"\"<\/a>.<\/li>\n
    15. Non-equilibrium large deviations and parabolic-hyperbolic PDE with irregular drift
      \n<\/strong>with Benjamin Fehrman,
      \nInvent. Math.<\/em> 234 (2023), no. 2, 573\u2013636, arXiv:       \"\"<\/a>.<\/li>\n
    16. Long-time behavior of stochastic Hamilton-Jacobi equations<\/a>
      \n<\/strong>with Paul Gassiat, Pierre-Louis Lions, Panagiotis E. Souganidis
      \nJ. Funct. Anal.<\/em> 286 (2024), no. 4, Paper No. 110269, 49 pp, <\/em>arXiv:       \"\"<\/a>.<\/li>\n
    17. SVI solutions to stochastic nonlinear diffusion equations on general measure spaces<\/strong>
      \nwith Michael R\u00f6ckner, Weina Wu
      \nto appear in Journal of Evolution Equations<\/em> (2024), arXiv       \"\"<\/a>.<\/li>\n
    18. Numerical approximation of singular-degenerate parabolic stochastic PDEs<\/strong>
      \nwith Lubom\u00edr Ba\u0148as, Christian Vieth
      \nto appear in: IMA Journal of Numerical Analysis<\/em>, arXiv:       \"\"<\/a>.<\/li>\n
    19. Thermodynamically consistent and positivity-preserving discretization of the thin-film equation with thermal noise
      \n<\/strong>with Rishabh Gvalani, Florian Kunick, Felix Otto
      \nMath. Comp.<\/em> 92 (2023), no. 343, 1931\u20131976, arXiv:       \"\"<\/a>.<\/li>\n
    20. Optimal regularity in time and space for stochastic porous medium equations
      \n<\/strong>with Stefano Bruno, Hendrik Weber
      \nAnn. Probab.<\/em> 50 (2022), no. 6, 2288\u20132343,, arXiv:       \"\"<\/a>.<\/span><\/li>\n
    21. Strong convergence rates for explicit space-time discrete numerical approximations of stochastic Allen-Cahn equations
      \n<\/strong>with Sebastian Becker, Arnulf Jentzen, Peter E. Kloeden
      \nStoch. Partial Differ. Equ. Anal. Comput.<\/em> 11 (2023), no. 1, 211\u2013268.,\u00a0arXiv:       \"\"<\/a>.<\/li>\n
    22. An example of intrinsic randomness in deterministic PDEs
      \n<\/strong>Franco Flandoli, Francesco Grotto
      \nStoch. Dyn.<\/em> 22 (2022), no. 7, Paper No. 2240023, 30 pp, arXiv: \u00a0      \"\"<\/a>.<\/li>\n
    23. Non-negative Martingale Solutions to the Stochastic Thin-Film Equation with Nonlinear Gradient Noise
      \n<\/strong>with Konstantinos Dareiotis, Manuel V. Gnann, G\u00fcnther Gr\u00fcn
      \nArch. Ration. Mech. Anal. (ARMA) 242 (2021), no. 1, 179\u2013234<\/em>:       \"\"<\/a>.<\/li>\n
    24. Porous media equations with multiplicative space-time white noise<\/strong>
      \nwith Konstantinos Dareiotis, M\u00e1t\u00e9 Gerencs\u00e9r
      \nAnn. Inst. Henri Poincar\u00e9 Probab. Stat. 57 (2021), no. 4, 2354\u20132371<\/em>:       \"\"<\/a>.<\/li>\n
    25. Path-by-path well-posedness of nonlinear diffusion equations with multiplicative noise<\/strong>
      \nwith Benjamin Fehrman
      \nJ. Math. Pures Appl. (9) 148 (2021), 221\u2013266.<\/em>:       \"\"<\/a>.<\/li>\n
    26. Convergence rates for the stochastic gradient descent method for non-convex objective functions<\/strong>
      \nwith Benjamin Fehrman, Arnulf Jentzen
      \nJ. Mach. Learn. Res. (JMLR) 21 (2020), Paper No. 136, 48 pp.<\/em>:       \"\"<\/a>.<\/li>\n
    27. The stochastic thin-film equation: existence of nonnegative martingale solutions<\/strong>
      \nwith Manuel V. Gnann
      \nStochastic Process. Appl. (SPA) 130 (2020), no. 12, 7260\u20137302<\/em>:       \"\"<\/a>.<\/li>\n
    28. Synchronisation by noise for the stochastic quantisation equation in dimensions 2 and 3<\/strong>
      \nwith Pavlos Tsatsoulis
      \nStoch. Dyn. (Stochastics and Dynamics) 20 (2020), no. 6, 2040006, 17 pp.<\/em>:       \"\"<\/a>.<\/li>\n
    29. Ergodicity for Stochastic Porous Media Equations<\/strong>
      \nwith Konstantinos Dareiotis, Pavlos Tsatsoulis
      \nSIAM J. Math. Anal. (SIMA) 52 (2020), no. 5, 4524\u20134564.<\/em> :       \"\"<\/a>.<\/li>\n
    30. Random attractors for locally monotone stochastic partial differential equations<\/strong>
      \nwith Wei Liu, Andre Schenke
      \nJ. Differential Equations (JDE) 269 (2020), no. 4, 3414\u20133455<\/em>:       \"\"<\/a>.<\/li>\n
    31. Nonlinear diffusion equations with nonlinear gradient noise<\/strong>
      \nwith Konstantinos Dareiotis
      \nElectron. J. Probab. (EJP) 25 (2020), Paper No. 35, 43 pp.<\/em>:       \"\"<\/a>.<\/li>\n
    32. Density bounds for solutions\u00a0 to differential equations driven by Gaussian rough paths<\/strong>
      \nwith\u00a0Cheng Ouyang, Samy Tindel
      \nJ. Theoret. Probab. (Journal of Theoretical Probability) 33 (2020), no. 2, 611\u2013648<\/em>:       \"\"<\/a>.<\/li>\n
    33. Optimal regularity in time and space for the porous medium equation<\/strong>
      \nwith Jonas Sauer, Eitan Tadmor
      \nAnal. PDE (Analysis and PDE) 13 (2020), no. 8, 2441\u20132480<\/em>:       \"\"<\/a>.<\/li>\n
    34. Optimal regularity for the porous medium equation<\/strong>
      \nJ. Eur. Math. Soc. (JEMS) 23 (2021), no. 2, 425\u2013465:<\/em>       \"\"<\/a>.<\/li>\n
    35. Well-posedness of nonlinear diffusion equations with nonlinear, conservative noise<\/strong>
      \nwith Benjamin Fehrman
      \nArch. Ration. Mech. Anal. 233 (2019), no. 1, 249\u2013322<\/em>:\u00a0       \"\"<\/a>.<\/li>\n
    36. Path-by-path regularization by noise for scalar conservation laws<\/strong>
      \nwith Khalil Chouk
      \nJ. Funct. Anal. (JFA) 277 (2019), no. 5, 1469\u20131498<\/em>:\u00a0\u00a0       \"\"<\/a>.<\/li>\n
    37. Lower and upper bounds for strong approximation errors for numerical approximations of stochastic heat equations
      \n<\/strong>with Sebastian Becker, Arnulf Jentzen, Peter E. Kloeden
      \nBIT (BIT Numerical Mathematics.) 60 (2020), no. 4, 1057\u20131073.<\/em>:\u00a0       \"\"<\/a>.<\/li>\n
    38. Speed of propagation for Hamilton-Jacobi equations with multiplicative rough time dependence and convex Hamiltonians<\/strong>
      \nwith\u00a0Paul Gassiat, Pierre-Louis Lions, Panagiotis E. Souganidis
      \nProbab. Theory Related Fields 176 (2020), no. 1-2, 421\u2013448.<\/em>:       \"\"<\/a>.<\/li>\n
    39. Stochastic nonlinear Fokker-Planck equations<\/strong>
      \nwith Michele Coghi
      \nNonlinear Anal. (Theory, Methods & Applications) 187 (2019), 259\u2013278<\/em>:       \"\"<\/a>.<\/li>\n
    40. Entropy solutions for stochastic porous media equations<\/strong>
      \nwith Konstantinos Dareiotis,\u00a0Mat\u00e9 Gerencs\u00e9r
      \nJ. Differential Equations 266 (2019), no. 6, 3732\u20133763<\/em>:       \"\"<\/a>.<\/li>\n
    41. Supremum estimates for degenerate, quasilinear stochastic partial differential equations<\/strong>
      \nwith Konstantinos Dareiotis
      \nAnn. Inst. Henri Poincar\u00e9 Probab. Stat. 55 (2019), no. 3, 1765\u20131796.<\/em>:       \"\"<\/a>.<\/li>\n
    42. Stochastic continuity equations with conservative noise<\/strong>
      \nwith Scott Smith
      \nJ. Math. Pures Appl. (JMPA) (9) 128 (2019), 225\u2013263<\/em>:\u00a0      \"\"<\/a>.<\/li>\n
    43. Regularity of solutions to scalar conservation laws with a force<\/strong>
      \nwith Xavier Lamy
      \nAnn. Inst. H. Poincar\u00e9 Anal. Non Lin\u00e9aire<\/em> 36 (2019), no. 2, 505\u2013521:       \"\"<\/a>.<\/li>\n
    44. Well-posedness by noise for scalar conservation laws
      \n<\/strong>with\u00a0Mario Maurelli
      \nComm. Partial Differential Equations (CPDE) 43 (2018), no. 12, 1702\u20131736<\/em>:       <\/a>.<\/li>\n
    45. Regularization by noise for stochastic Hamilton-Jacobi equations
      \n<\/strong>with Paul Gassiat
      \n<\/strong>Probab. Theory Related Fields 173 (2019), no. 3-4, 1063\u20131098.<\/em>:\u00a0\u00a0       <\/a>.<\/li>\n
    46. Regularization and well-posedness by noise for ordinary and partial\u00a0differential equations<\/strong>
      \nto appear in:\u00a0Stochastic Partial Differential Equations and Related Fields,\u00a0Springer Proceedings in Mathematics & Statistics, <\/em>preprint:       \"\"<\/a>.<\/li>\n
    47. Well-posedness and regularity for quasilinear degenerate
      \nparabolic-hyperbolic SPDE
      \n<\/strong>with Martina Hofmanova
      \nAnn. Probab.<\/em> 46 (2018), no. 5, 2495\u20132544:\u00a0      <\/a>.<\/li>\n
    48. Stochastic non-isotropic degenerate parabolic-hyperbolic equations
      \n<\/strong>with Panagiotis E. Souganidis
      \nStochastic Processes and their Applications (SPA) 127 (2017), no. 9, 2961\u20133004<\/em>:       <\/a>.<\/li>\n
    49. Ergodicity and local limits for stochastic local and nonlocal p-Laplace
      \nequations
      \n<\/strong>with\u00a0Jonas M. T\u00f6lle
      \n<\/strong>SIAM Journal on Mathematical Analysis (SIMA) 48 (2016), no. 6, 4094\u20134125:<\/em>\u00a0      \"\"<\/a>.<\/li>\n
    50. Stochastic variational inequalities and regularity for degenerate stochastic partial differential equations
      \n<\/strong><\/strong>with\u00a0Michael R\u00f6ckner
      \nTransactions of the AMS 369 (2017), no. 5, 3017\u20133045.<\/em>:       \"\"<\/a>.<\/li>\n
    51. Semi-discretization for stochastic scalar conservation laws with multiple rough fluxes<\/strong>
      \nwith Beno\u00eet Perthame, Panagiotis E. Souganidis
      \nSIAM Journal on Numerical Analysis (SINUM) 54 (2016), no. 4, 2187\u20132209:<\/em>\u00a0      \"\"<\/a>.<\/li>\n
    52. Long-time behavior, invariant measures and regularizing effects for stochastic scalar conservation laws
      \n<\/strong>with\u00a0Panagiotis E. Souganidis
      \nComm. Pure Appl. Math. 70 (2017), no. 8, 1562\u20131597: <\/em>      \"\"<\/a>.<\/li>\n
    53. Synchronization by noise<\/strong>
      \nwith\u00a0Franco Flandoli, Michael Scheutzow
      \nProbab. Theory Related Fields 168 (2017), no. 3-4, 511\u2013556.<\/em>:\u00a0<\/b>      \"\"<\/a>.<\/li>\n
    54. Weak synchronization for isotropic flows<\/strong>
      \nwith Michael Cranston, Michael Scheutzow
      \nDiscrete Contin. Dyn. Syst. Ser. B (DCDS-B) 21 (2016), no. 9, 3003\u20133014<\/em>:\u00a0<\/strong> \u00a0      \"\"<\/a>.<\/li>\n
    55. Synchronization by noise for order-preserving random dynamical systems
      \n<\/strong>with\u00a0Franco Flandoli, Michael Scheutzow
      \nThe Annals of Probability 45 (2017), no. 2, 1325\u20131350.<\/em>:\u00a0<\/strong>\u00a0      \"\"<\/a>.<\/li>\n
    56. Stability of solutions to stochastic partial differential equations
      \n<\/strong>with\u00a0Jonas M. T\u00f6lle
      \n<\/strong>J. Differential Equations,<\/em> 260 (2016), no. 6, 4973\u20135025:\u00a0      \"\"<\/a>.<\/li>\n
    57. Singular-degenerate multivalued stochastic fast diffusion equations<\/strong>
      \nwith Michael R\u00f6ckner
      \nSIAM Journal on Mathematical Analysis (SIMA) 47 (2015), no. 5, 4058\u20134090:       \"\".<\/a><\/em><\/li>\n
    58. Stochastic scalar conservation laws driven by rough paths
      \n<\/strong>with\u00a0Peter K. Friz
      \n<\/strong>Ann. Inst. H. Poincar\u00e9 Anal. Non Lin\u00e9aire\u00a0(AIHP) 33 (2016), no. 4, 933\u2013963<\/em>:\u00a0\u00a0      \"\".<\/a><\/li>\n
    59. Scalar conservation laws with multiple rough fluxes
      \n<\/strong> with Panagiotis E. Souganidis
      \nCommun. Math. Sci<\/em>. 13 (2015), no. 6, 1569\u20131597.: \u00a0      \"\".<\/a><\/li>\n
    60. Finite time extinction for stochastic sign fast diffusion and self-organized criticality
      \n<\/strong><\/strong><\/strong>Comm. Math. Phys.<\/em>,<\/em>\u00a0335 (2015), no. 1, 309\u2013344:\u00a0<\/strong>\u00a0      \"\"<\/a>.<\/li>\n
    61. Jain-Monrad criterion for rough paths
      \n<\/strong><\/strong>with Peter K. Friz, Archil Gulisashvili, Sebastian Riedel
      \n<\/strong>to appear in:\u00a0The Annals of Probability<\/em>, (2014):\u00a0      \"\"<\/a>.<\/strong><\/li>\n
    62. Multi-valued, singular stochastic evolution inclusions.
      \n<\/strong>with Jonas M. T\u00f6lle
      \nJ. Math. Pures Appl. (JMPA)<\/em> (9) 101 (2014), no. 6, 789\u2013827:\u00a0      \"\"<\/a>,\u00a0arXiv:\u00a0\u00a0\"\"<\/a>.<\/li>\n
    63. Random attractors for stochastic porous media equations perturbed by space-time linear multiplicative noise.
      \n<\/strong>The Annals of Probability,<\/em>\u00a042 (2014), no. 2, 818\u2013864.:\u00a0\u00a0      \"\"<\/a>.<\/li>\n
    64. Finite speed of propagation for stochastic porous media equation.
      \n<\/strong>SIAM J. Math. Anal. (SIMA)<\/em>, 45 (2013), no. 5, 2734\u20132766.:\u00a0\u00a0      \"\"<\/a>.<\/li>\n
    65. Random attractors for singular stochastic partial differential equations.
      \n<\/strong>J. Differential Equations (JDE),<\/em> 255 (2013), no. 3, 524\u2013559:\u00a0\u00a0      \"\"<\/a>.<\/li>\n
    66. Random Attractors for Degenerate Stochastic Partial Differential Equations.
      \n<\/strong>J. Dynam. Differential Equations (JDDE)<\/em>, 25(1) (2013), 121-157.\u00a0\u00a0      \"\"<\/a><\/li>\n
    67. Strong Solutions for Stochastic Partial Differential Equations of Gradient Type<\/strong>.
      \n<\/strong> J. Funct. Anal. (JFA)<\/em>,\u00a0263(8)(2012),2355-2383.\u00a0      \"\"<\/a><\/li>\n
    68. Random attractors for stochastic porous media equations perturbed by space-time linear multiplicative noise. <\/strong><\/strong>(Concise announcement of the results)
      \nComptes Rendus Mathematique<\/em>,\u00a0350(5\u20136)(2012), 299\u2013302.      \"\"<\/a><\/li>\n
    69. Random attractors for a class of stochastic partial di\ufb00erential equations driven by general additive noise.<\/strong>
      \nwith Wei Liu, Michael R\u00f6ckner
      \nJ. Differential Equations (JDE)<\/em>, 251(4-5)(2011), 1225 – 1253.\u00a0      \"\"<\/a><\/li>\n
    70. The Global Random Attractor for a Class of Stochastic Porous Media Equations <\/strong>
      \nwith Wolf-J\u00fcrgen Beyn, Michael R\u00f6ckner, Paul Lescot
      \nComm. Partial Differential Equations (CPDE)<\/em>, 36 (3) (2011), 446 – 469.       \"\"<\/a><\/li>\n<\/ol>\n

      Theses<\/h1>\n