%0 Journal Article %A Goeffrey Fox %A Pedro Morales %T Extension of group-valued set functions defined on lattices %J Fundamenta Mathematicae %D 1983 %P 143-155 %V 116 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-116-3-143-155/ %R 10.4064/fm-116-3-143-155 %G en %F 10_4064_fm_116_3_143_155