@article{GDZPPN002064243,
title = {Curvature, diameter and Betti numbers.},
journal = {Commentarii mathematici Helvetici},
volume = {56},
year = {1981},
pages = {179-195},
language = {en},
url = {http://dml.mathdoc.fr/item/GDZPPN002064243}
}
Gromov, Michael. Curvature, diameter and Betti numbers.. Commentarii mathematici Helvetici, Tome 56 (1981) pp. 179-195. http://gdmltest.u-ga.fr/item/GDZPPN002064243/