TY - JOUR AU - E. D. Livshits TI - Optimality of the greedy algorithm for some function classes JO - Sbornik. Mathematics PY - 2007 SP - 691 EP - 709 VL - 198 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2007_198_5_a4/ LA - en ID - SM_2007_198_5_a4 ER -