%0 Journal Article %A Evans, R. J. %T Free products of two real cyclic matrix groups %J Glasgow mathematical journal %D 1974 %P 121-128 %V 15 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002287/ %R 10.1017/S0017089500002287 %F 10_1017_S0017089500002287