TY - JOUR AU - Yu. Yu. Druzhinin TI - The linearity of metric projection operator for subspaces of $L_p$ spaces JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 2010 SP - 30 EP - 36 IS - 1 UR - http://geodesic.mathdoc.fr/item/VMUMM_2010_1_a4/ LA - ru ID - VMUMM_2010_1_a4 ER -