TY - JOUR AU - M. A. Vorob'eva TI - Approximation of functions by Newtonian potentials JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 1994 SP - 6 EP - 11 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_1994_1_a1/ LA - ru ID - VMUMM_1994_1_a1 ER -