Kinzebulatov, D. (2017) “A new approach to the $L^p$-theory of $-\Delta + b \cdot \nabla$, and its applications to Feller processes with general drifts”, ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, 17(2), pp. 685-711. doi: 10.2422/2036-2145.201510_018.