%0 Journal Article %A KIM, BYUNG HAK %A KIM, IN-BAE %A MAEDA, SADAHIRO %T CHARACTERIZATIONS OF BERGER SPHERES FROM THE VIEWPOINT OF SUBMANIFOLD THEORY %J Glasgow mathematical journal %D 2020 %P 137-145 %V 62 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089519000016/ %R 10.1017/S0017089519000016 %F 10_1017_S0017089519000016