TY - JOUR AU - V. A. Daugavet AU - P. V. Yakovlev TI - Mean-square approximation of a rectangular matrix by matrices of smaller rank JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1989 SP - 1466 EP - 1479 VL - 29 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1989_29_10_a2/ LA - ru ID - ZVMMF_1989_29_10_a2 ER -