@article{1256050808,
author = {Naveira, A. M.},
title = {On the higher order sectional curvatures},
journal = {Illinois J. Math.},
volume = {19},
number = {4},
year = {1975},
pages = { 165-172},
language = {en},
url = {http://dml.mathdoc.fr/item/1256050808}
}
Naveira, A. M. On the higher order sectional curvatures. Illinois J. Math., Tome 19 (1975) no. 4, pp. 165-172. http://gdmltest.u-ga.fr/item/1256050808/