%0 Journal Article %A R. M. Trigub %T Multipliers in the~Hardy spaces $H_p(D^m)$ with $p\in (0,1]$ and approximation properties of summability methods for power series %J Sbornik. Mathematics %D 1997 %P 621-638 %V 188 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1997_188_4_a4/ %G en %F SM_1997_188_4_a4