@article{IVM_1959_4_a15,
     author = {N. A. Pan'kin},
     title = {The integration of a~linear second-order differential equation with a~variable coefficient},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {122--125},
     publisher = {mathdoc},
     number = {4},
     year = {1959},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1959_4_a15/}
}