@article{10_1017_S0017089501020110,
     author = {Koh, Sung-Eun and Lee, Seung-Won},
     title = {Addendum to the paper: {Sphere} theorem by means of the ratio of mean curvature functions},
     journal = {Glasgow mathematical journal},
     pages = {275--276},
     year = {2001},
     volume = {43},
     number = {2},
     doi = {10.1017/S0017089501020110},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089501020110/}
}