TY  - JOUR
AU  - Paeng, Seong-Hun
AU  - Yun, Jong-Gug
TI  - Conjugate Radius and Sphere Theorem
JO  - Canadian mathematical bulletin
PY  - 1999
SP  - 214
EP  - 220
VL  - 42
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1999-026-6/
DO  - 10.4153/CMB-1999-026-6
ID  - 10_4153_CMB_1999_026_6
ER  -