TY - JOUR AU - I. M. Cherevko TI - An estimate for the fundamental matrix of singularly perturbed functional-differential equations and some of its applications JO - Differencialʹnye uravneniâ PY - 1997 SP - 281 EP - 283 VL - 33 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1997_33_2_a19/ LA - ru ID - DE_1997_33_2_a19 ER -