@article{IVM_1961_4_a4,
     author = {N. A. Kulikov},
     title = {A method of solving ordinary linear differential equations with variable coefficients},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {50--56},
     publisher = {mathdoc},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1961_4_a4/}
}