Valuations and group algebras Ulrich Albrecht, Günter Törner (1998) Rendiconti del Seminario Matematico della Università di Padova
Vanishing power values of commutators with derivations. Dhara, Basudeb, Sharma, R.K. (2009) Sibirskij Matematicheskij Zhurnal
Vanishing power values of commutators with derivations on prime rings. Dhara, Basudeb (2009) International Journal of Mathematics and Mathematical Sciences
Vers une notion de dérivation fonctionnelle causale Michel Fliess (1986) Annales de l'I.H.P. Analyse non linéaire