@article{DAN_1961_139_2_a5,
     author = {A. E. Gel'man},
     title = {On majorant equations},
     journal = {Doklady Akademii Nauk},
     pages = {283--285},
     year = {1961},
     volume = {139},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a5/}
}