%0 Journal Article %A Sóstenes Lins %T Combinatorics of orientation reversing polygons. %J Aequationes mathematicae %D 1985 %P 123-131 %V 29 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1985__29_137085/ %F AM2_1985__29_137085