@article{GDZPPN002302195,
title = {Some Relations Between Curvature and Characteristic Classes.},
journal = {Mathematische Annalen},
volume = {189},
year = {1970},
pages = {257-267},
zbl = {0181.49901},
url = {http://dml.mathdoc.fr/item/GDZPPN002302195}
}
GRAY, A. Some Relations Between Curvature and Characteristic Classes.. Mathematische Annalen, Tome 189 (1970) pp. 257-267. http://gdmltest.u-ga.fr/item/GDZPPN002302195/