%0 Journal Article %A Isidore Fleischer %T Extending a partial equivalence to a congruence and relative embeddings in universal algebras %J Fundamenta Mathematicae %D 1980 %P 13-17 %V 106 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-106-1-13-17/ %R 10.4064/fm-106-1-13-17 %G en %F 10_4064_fm_106_1_13_17