%0 Journal Article %A Clifford, Andrew %T A Class of Exponent-Sum Two Equations Over Groups %J Glasgow mathematical journal %D 2002 %P 201-207 %V 44 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089502020025/ %R 10.1017/S0017089502020025 %F 10_1017_S0017089502020025