@article{DE_1967_3_6_a4,
     author = {A. M. Slesarev},
     title = {The group of symmetric transformations of a generalized {Gyld\'en} problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {912--918},
     year = {1967},
     volume = {3},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_6_a4/}
}