%0 Journal Article %A RICHARD M. COHN %T Types of Singularity of Components of Difference Polynomials %J Aequationes mathematicae %D 1973 %P 236-241 %V 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1973__9_136350/ %F AM2_1973__9_136350