TY - JOUR AU - S. P. Sidorov TI - An estimate for the relative linear width of the unit ball for a class of positive operators JO - Sibirskij žurnal industrialʹnoj matematiki PY - 2007 SP - 122 EP - 128 VL - 10 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SJIM_2007_10_4_a12/ LA - ru ID - SJIM_2007_10_4_a12 ER -