TY - JOUR AU - V. S. Rykhlov TI - Expansion in root functions of strongly irregular pencil of differential operators of the second order with multiple characteristics JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2016 SP - 165 EP - 174 VL - 16 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2016_16_2_a6/ LA - ru ID - ISU_2016_16_2_a6 ER -