@article{DE_1967_3_9_a6,
     author = {Yu. F. Shain},
     title = {An investigation of a system of equations describing the motion of a spherical pendulum in the case of the presence of a resistance},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1477--1483},
     publisher = {mathdoc},
     volume = {3},
     number = {9},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_9_a6/}
}