(NaSIMPTOTI^ESKIE RE[ENIQ ZADA^ MATAMATI^ESKOJ FIZIKI (B:s (NsB(B. (NNAU^(B. (NST(B. /s - (NnOWOK[ENOW(B, (Nw(B.(N`(B.s; (NbA[KIRSKIJ NAU^NYJ CENTR uRALXSKOGO OTDELENIQ an sssrs; (NiNSTITUT MATEMATIKI S wc an sssrs ((NuFA (B:s [(Nb(B. (NI(B.],s, 1990)
(NbIBLIOGR(B. (NW KONCE ST(B.s
Keywords: (NmATEMATI^ESKAQ FIZIKA (B- (NzADA^I (B- (NaSIMPTOTI^ESKIE RE[ENIQs