Morley rank and Lascar rank are equal on generic types of definable groups in differentially closed fields with finitely many commuting derivations.
Anand Pillay. Wai Yan Pong. "On Lascar rank and Morley rank of definable groups in differentially closed fields." J. Symbolic Logic 67 (3) 1189 - 1196, September 2002. https://doi.org/10.2178/jsl/1190150158