%0 Journal Article %A Martin Arkowitz %A Mauricio Gutierrez %T Equalizers and coactions of groups %J Fundamenta Mathematicae %D 2002 %P 155-165 %V 171 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm171-2-3/ %R 10.4064/fm171-2-3 %G en %F 10_4064_fm171_2_3