%0 Journal Article %A Janoš, Ludvík %T Some cohomological aspects of the Banach fixed point principle %J Mathematica Bohemica %D 2011 %P 333-336 %V 136 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2011.141653/ %R 10.21136/MB.2011.141653 %G en %F 10_21136_MB_2011_141653