TY - JOUR AU - A. P. Buslaev TI - On the asymptotics of widths and of spectra of nonlinear differential equations JO - Algebra i analiz PY - 1991 SP - 108 EP - 118 VL - 3 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_1991_3_6_a3/ LA - ru ID - AA_1991_3_6_a3 ER -