%0 Journal Article %A Antonio Attalienti %A Michele %T Degenerate evolution problems and Beta-type operators %J Studia Mathematica %D 2000 %P 117-139 %V 140 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-140-2-117-139/ %R 10.4064/sm-140-2-117-139 %G en %F 10_4064_sm_140_2_117_139