TY - JOUR AU - S. M. Labovski TI - Positive solutions of linear functional-differential equations JO - Differencialʹnye uravneniâ PY - 1984 SP - 578 EP - 584 VL - 20 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1984_20_4_a3/ LA - ru ID - DE_1984_20_4_a3 ER -