(NpRINCIPY SOWREMENNOJ MATEMATI^ESKOJ FIZIKI (B/s - (NrIHTMAJER(B, (NrOBERT d(B.s; (NkONDRA[OW(B, (Nw(B.(Ne(B.s ((NmOSKWA (B:s (NmIR(B,s, 1982)
[(Nt(B. 1] (1982; 486 (NS(B.)s (Nt(B. 2 (1984; 381 (NS(B.)s
Keywords: (NmATEMATI^ESKAQ FIZIKAs