TY - JOUR AU - V. M. Borok TI - On systems of linear parital differential equations with constant coefficients JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1957 SP - 45 EP - 66 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1957_1_a5/ LA - ru ID - IVM_1957_1_a5 ER -