%0 Journal Article %A James Daniel %T A generalized contraction mapping theorem in E-metric spaces %J Studia Mathematica %D 1974 %P 245-250 %V 50 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-50-3-245-250/ %R 10.4064/sm-50-3-245-250 %G en %F 10_4064_sm_50_3_245_250