Equivalence of weak and viscosity solutions to the p -Laplace equation in the Heisenberg group. Bieske, Thomas — 2006 Annales Academiae Scientiarum Fennicae. Mathematica
Comparison principle for parabolic equations in the Heisenberg group. Bieske, Thomas — 2005 Electronic Journal of Differential Equations (EJDE) [electronic only]
A comparison principle for a class of subparabolic equations in Grushin-type spaces. Bieske, Thomas — 2007 Electronic Journal of Differential Equations (EJDE) [electronic only]
Parabolic equations relative to vector fields. Bieske, Thomas — 2008 Electronic Journal of Differential Equations (EJDE) [electronic only]