@article{10_1017_S0017089519000016,
     author = {KIM, BYUNG HAK and KIM, IN-BAE and MAEDA, SADAHIRO},
     title = {CHARACTERIZATIONS {OF} {BERGER} {SPHERES} {FROM} {THE} {VIEWPOINT} {OF} {SUBMANIFOLD} {THEORY}},
     journal = {Glasgow mathematical journal},
     pages = {137--145},
     year = {2020},
     volume = {62},
     number = {1},
     doi = {10.1017/S0017089519000016},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089519000016/}
}