TY - JOUR AU - A. I. Perov TI - A~multi-dimensional linear differential equation of the second order with constant coefficient JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1966 SP - 117 EP - 124 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1966_6_a12/ LA - ru ID - IVM_1966_6_a12 ER -