@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/}
}