TY - JOUR AU - G. V. Drekova AU - V. G. Kravchenko TI - Dimension and structure of the kernel and cokernel of a singular JO - Doklady Akademii Nauk PY - 1990 SP - 271 EP - 274 VL - 315 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1990_315_2_a2/ LA - ru ID - DAN_1990_315_2_a2 ER -