@article{1214435490,
author = {Elerath, Doug},
title = {An improved Toponogov comparison theorem for nonnegatively curved manifolds},
journal = {J. Differential Geom.},
volume = {15},
number = {1},
year = {1980},
pages = { 187-216},
language = {en},
url = {http://dml.mathdoc.fr/item/1214435490}
}
Elerath, Doug. An improved Toponogov comparison theorem for nonnegatively curved manifolds. J. Differential Geom., Tome 15 (1980) no. 1, pp. 187-216. http://gdmltest.u-ga.fr/item/1214435490/