TY - JOUR AU - L. È. Èl'sgol'ts TI - On the integration of linear partial differential equations with retarded argument JO - Uchenye Zapiski Moskovskogo Gosudarstvennogo Universiteta PY - 1956 SP - 57 EP - 58 VL - 181 IS - 181 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UZMU_1956_181_181_a3/ LA - ru ID - UZMU_1956_181_181_a3 ER -