@article{DAN_1981_257_5_a11,
     author = {S. S. Grigoryan},
     title = {A problem of {L.~Prandtl} and the theory of flow of a plastic material over surfaces},
     journal = {Doklady Akademii Nauk},
     pages = {1075--1077},
     year = {1981},
     volume = {257},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_257_5_a11/}
}