@article{IVM_1965_4_a1,
     author = {L. M. Berkovich},
     title = {Factorization of ordinary differential operators that can be transformed into operators with constant coefficients},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {8--16},
     publisher = {mathdoc},
     number = {4},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1965_4_a1/}
}