@article{GDZPPN00223629X,
title = {Diameter bounds for convex surfaces with pinched mean curvature.},
journal = {Manuscripta mathematica},
volume = {86},
year = {1995},
pages = {15-22},
zbl = {0821.53004},
url = {http://dml.mathdoc.fr/item/GDZPPN00223629X}
}
Lang, Urs. Diameter bounds for convex surfaces with pinched mean curvature.. Manuscripta mathematica, Tome 86 (1995) pp. 15-22. http://gdmltest.u-ga.fr/item/GDZPPN00223629X/