TY - JOUR AU - T. P. Lukashenko TI - Systems of expansions similar to orthogonal systems JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 1997 SP - 487 EP - 517 VL - 3 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_1997_3_2_a9/ LA - ru ID - FPM_1997_3_2_a9 ER -