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@article{DAN_1968_178_1_a11, author = {M. M. Khapaev}, title = {Instability under constantly acting perturbations}, journal = {Doklady Akademii Nauk}, pages = {47--50}, publisher = {mathdoc}, volume = {178}, number = {1}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_178_1_a11/} }
M. M. Khapaev. Instability under constantly acting perturbations. Doklady Akademii Nauk, Tome 178 (1968) no. 1, pp. 47-50. http://geodesic.mathdoc.fr/item/DAN_1968_178_1_a11/