1. Carleman estimates for degenerate parabolic operators with applications to null controllability;Alabau-Boussouira;J. Evol. Equ.,2006
2. A generalization of the Kalman rank condition for time-dependent coupled linear parabolic systems;Ammar-Khodja;Differ. Equ. Appl.,2009
3. Null controllability of Kolmogorov-type equations;Beauchard;Math. Control Signals Systems,2014
4. K. Beauchard, P. Cannarsa, Heat equation on the Heisenberg group: observability and applications, preprint, 2015.