TY - JOUR AU - A. G. Eliseev TI - Singular perturbation theory for systems of differential equations in the case of multiple spectrum of the limit operator.~III JO - Izvestiya. Mathematics PY - 1985 SP - 475 EP - 500 VL - 25 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1985_25_3_a3/ LA - en ID - IM2_1985_25_3_a3 ER -