@article{DAN_1985_285_5_a9,
     author = {A. G. Podgaev},
     title = {Compactness of certain nonlinear sets},
     journal = {Doklady Akademii Nauk},
     pages = {1064--1066},
     year = {1985},
     volume = {285},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_285_5_a9/}
}