TY - JOUR AU - G. I. Laptev TI - Exponential solutions of the Cauchy problem with a constant operator JO - Differencialʹnye uravneniâ PY - 1971 SP - 232 EP - 243 VL - 7 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1971_7_2_a5/ LA - ru ID - DE_1971_7_2_a5 ER -