@article{DE_1979_15_6_a9,
     author = {N. E. Tsapenko},
     title = {A general method for solving a second-order homogeneous linear equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1050--1053},
     publisher = {mathdoc},
     volume = {15},
     number = {6},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_6_a9/}
}