%0 Journal Article %A H. Mönch %A G.-F. v. Harten %T The Product Formula for the Topological Degree of Strict ...-Contractions. %J Manuscripta mathematica %D 1977 %P 113-124 %V 23 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1977__23_154511/ %F MM2_1977__23_154511