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@article{AA_1991_3_6_a3, author = {A. P. Buslaev}, title = {On the asymptotics of widths and of spectra of nonlinear differential equations}, journal = {Algebra i analiz}, pages = {108--118}, publisher = {mathdoc}, volume = {3}, number = {6}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1991_3_6_a3/} }
A. P. Buslaev. On the asymptotics of widths and of spectra of nonlinear differential equations. Algebra i analiz, Tome 3 (1991) no. 6, pp. 108-118. http://geodesic.mathdoc.fr/item/AA_1991_3_6_a3/