TY - JOUR AU - M. E. Drakhlin TI - A~comparison principle for differential equations of the second order on an infinite interval JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1967 SP - 26 EP - 30 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1967_9_a2/ LA - ru ID - IVM_1967_9_a2 ER -