%0 Journal Article %A T. Erdélyi %T George Lorentz and inequalities in approximation %J Algebra i analiz %D 2009 %P 1-57 %V 21 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_2009_21_3_a0/ %G en %F AA_2009_21_3_a0