%0 Journal Article %A Hammack, Richard H. %A Taylor, Dewey T. %T Proper Connection Of Direct Products %J Discussiones Mathematicae. Graph Theory %D 2017 %P 1005-1013 %V 37 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2017_37_4_a10/ %G en %F DMGT_2017_37_4_a10