%0 Journal Article %A Ovidiu T. Pop %T About Some Linear and Positive Operators %J Mathematica balkanica %D 2007 %P 339 %V 21 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2007_21_3-4_a9/ %F MABA_2007_21_3-4_a9