%0 Journal Article %A Swetits, J. %A Wood, B. %T On a Class of Positive Linear Operators %J Canadian mathematical bulletin %D 1973 %P 557-559 %V 16 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1973-091-2/ %R 10.4153/CMB-1973-091-2 %F 10_4153_CMB_1973_091_2