@article{1029000379,
author = {Clifton, Yeaton H. and Maltz, Robert},
title = {The $K$-nullity spaces of the curvature operator.},
journal = {Michigan Math. J.},
volume = {17},
number = {1},
year = {1970},
pages = { 85-89},
language = {en},
url = {http://dml.mathdoc.fr/item/1029000379}
}
Clifton, Yeaton H.; Maltz, Robert. The $K$-nullity spaces of the curvature operator.. Michigan Math. J., Tome 17 (1970) no. 1, pp. 85-89. http://gdmltest.u-ga.fr/item/1029000379/