TY - JOUR AU - V. A. Oskolkov TI - Criterion for quasi-power basis and its applications JO - Matematičeskie zametki PY - 1990 SP - 72 EP - 78 VL - 48 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1990_48_6_a8/ LA - ru ID - MZM_1990_48_6_a8 ER -