TY - JOUR AU - L. M. Berkovich TI - Factorization of ordinary differential operators that can be transformed into operators with constant coefficients JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1965 SP - 8 EP - 16 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1965_4_a1/ LA - ru ID - IVM_1965_4_a1 ER -