@article{03947102,
title = {Pseudo-Riemannian manifolds endowed with an almost para f-structure.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {8},
year = {1985},
pages = {257-266},
doi = {10.1155/S016117128500028X},
zbl = {0589.53035},
language = {en},
url = {http://dml.mathdoc.fr/item/03947102}
}
Goldberg, Vladislav V.; Rosca, Radu. Pseudo-Riemannian manifolds endowed with an almost para f-structure.. International Journal of Mathematics and Mathematical Sciences, Tome 8 (1985) pp. 257-266. doi : 10.1155/S016117128500028X. http://gdmltest.u-ga.fr/item/03947102/