%0 Journal Article %A McCool, James %T Elements of finite order in free product sixth-groups %J Glasgow mathematical journal %D 1968 %P 128-145 %V 9 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500000410/ %R 10.1017/S0017089500000410 %F 10_1017_S0017089500000410