%0 Journal Article
%A G. S. Smirnov
%T On a~criterion for an element of best $(\alpha,\beta)$-approximation in the space of summable functions
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1987
%P 201-202
%V 180
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_1987_180_a122/
%G ru
%F TM_1987_180_a122