(NtEORETI^ESKIE ASPEKTY DERIWACII (B:s (NmEVWUZOWSKIJ SBORNIK NAU^NYH TRUDOW (B/s - (NmURZIN(B, (NlEONID nIKOLAEWI^s; (NpERMSKIJ GOSUDARSTWENNYJ UNIWERSITET IM(B. (Na(B.(Nm(B. (NgORXKOGOs ((NpERMX (B:s (NpERMSKOGO GOS(B. (NUN(B-(NTA(B,s, 1982)
Keywords: (NdERIWACIQs; (NqZYKOZNANIEs