@article{1102982806,
author = {Tsagas, Grigorios},
title = {A special deformation of the metric with no negative sectional curvature of a Riemannian space.},
journal = {Pacific J. Math.},
volume = {31},
number = {3},
year = {1969},
pages = { 715-725},
language = {en},
url = {http://dml.mathdoc.fr/item/1102982806}
}
Tsagas, Grigorios. A special deformation of the metric with no negative sectional curvature of a Riemannian space.. Pacific J. Math., Tome 31 (1969) no. 3, pp. 715-725. http://gdmltest.u-ga.fr/item/1102982806/