%0 Journal Article %A Mielke, M. V. %T Topos based homology theory %J Commentationes Mathematicae Universitatis Carolinae %D 1993 %P 549-565 %V 34 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1993__34_3_a17/ %G en %F CMUC_1993__34_3_a17