@article{05031304,
title = {Higher order Ossermann pseudo-Riemannian manifolds of neutral signature },
journal = {Balkan Journal of Geometry and its Applications (BJGA)},
volume = {10},
year = {2005},
pages = {175-178},
zbl = {1092.53053},
language = {en},
url = {http://dml.mathdoc.fr/item/05031304}
}
Şterbeţi, Cătălin. Higher order Ossermann pseudo-Riemannian manifolds of neutral signature . Balkan Journal of Geometry and its Applications (BJGA), Tome 10 (2005) pp. 175-178. http://gdmltest.u-ga.fr/item/05031304/