%0 Journal Article %A A. Chigogidze %T Extension properties of Stone–Čech coronas and proper absolute extensors %J Fundamenta Mathematicae %D 2013 %P 155-173 %V 222 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm222-2-3/ %R 10.4064/fm222-2-3 %G en %F 10_4064_fm222_2_3