%0 Journal Article %A P K. Jha %A G Slutzki %T A note on outerplanarity of product graphs %J Applicationes Mathematicae %D 1991 %P 537-544 %V 21 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-21-4-537-544/ %R 10.4064/am-21-4-537-544 %G en %F 10_4064_am_21_4_537_544