TY - JOUR AU - A. P. Buslaev TI - On exact constants in inequalities for norms of powers of linear operators in a~finite-dimensional JO - Matematičeskie zametki PY - 1993 SP - 3 EP - 14 VL - 53 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1993_53_2_a0/ LA - ru ID - MZM_1993_53_2_a0 ER -