%0 Journal Article %A Yeung, Yik-Hoi Au %T Another proof of the theorems on the eigenvalues of a square quaternion matrix %J Glasgow mathematical journal %D 1964 %P 191-195 %V 6 %N 4 %U http://geodesic.mathdoc.fr/articles/10.1017/S2040618500035000/ %R 10.1017/S2040618500035000 %F 10_1017_S2040618500035000