%0 Journal Article %A V. A. Oskolkov %T Criterion for quasi-power basis and its applications %J Matematičeskie zametki %D 1990 %P 72-78 %V 48 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1990_48_6_a8/ %G ru %F MZM_1990_48_6_a8