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@article{DAN_1988_301_6_a13, author = {A. A. Spektor}, title = {Qualitative properties and behavior in time of the solutions of}, journal = {Doklady Akademii Nauk}, pages = {1337--1340}, publisher = {mathdoc}, volume = {301}, number = {6}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1988_301_6_a13/} }
A. A. Spektor. Qualitative properties and behavior in time of the solutions of. Doklady Akademii Nauk, Tome 301 (1988) no. 6, pp. 1337-1340. http://geodesic.mathdoc.fr/item/DAN_1988_301_6_a13/