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@article{DAN_1989_308_5_a7, author = {A. V. Pokrovskii}, title = {Global criteria for the existence of self-oscillatory regimes}, journal = {Doklady Akademii Nauk}, pages = {1057--1060}, publisher = {mathdoc}, volume = {308}, number = {5}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1989_308_5_a7/} }
A. V. Pokrovskii. Global criteria for the existence of self-oscillatory regimes. Doklady Akademii Nauk, Tome 308 (1989) no. 5, pp. 1057-1060. http://geodesic.mathdoc.fr/item/DAN_1989_308_5_a7/