%0 Journal Article %A Hartmut Höft %T On the semilattice of extensions of a partial algebra %J Colloquium Mathematicum %D 1974 %P 193-201 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-30-2-193-201/ %R 10.4064/cm-30-2-193-201 %G en %F 10_4064_cm_30_2_193_201