Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1983_273_5_a8, author = {A. A. Krasovskii}, title = {A general condition favoring sharp estimation}, journal = {Doklady Akademii Nauk}, pages = {1067--1070}, publisher = {mathdoc}, volume = {273}, number = {5}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1983_273_5_a8/} }
A. A. Krasovskii. A general condition favoring sharp estimation. Doklady Akademii Nauk, Tome 273 (1983) no. 5, pp. 1067-1070. http://geodesic.mathdoc.fr/item/DAN_1983_273_5_a8/