@article{DAN_1960_135_5_a17,
     author = {B. V. Medvedev},
     title = {The axiomatic method and the theory of perturbations},
     journal = {Doklady Akademii Nauk},
     pages = {1087--1090},
     year = {1960},
     volume = {135},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_135_5_a17/}
}