%0 Journal Article %A Aristide Delenau %A Peter Hilton %T On Kan extensions of cohomology theories and Serre classes of groups %J Fundamenta Mathematicae %D 1971 %P 143-165 %V 73 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-73-2-143-165/ %R 10.4064/fm-73-2-143-165 %G en %F 10_4064_fm_73_2_143_165