Translation of: Different͡sial'nye uravnenii͡a s chastnymi proizvodnymi 7, issued as vol. 64 of the serial: Itogi nauki i tekhniki, Sovremennye proble...
Translation of: Different͡sial'nye uravnenii͡a s chastnymi proizvodnymi 7, issued as vol. 64 of the serial: Itogi nauki i tekhniki, Sovremennye problemy matematiki, Fundamental'nye napravlenii͡a.