In 2005 Gilkey and Nikčević introduced complete -curvature homogeneous pseudo-Riemannian manifolds of neutral signature , which are -modeled on an indecomposable symmetric space, but which are not -curvature homogeneous. In this paper the authors continue their study of the same family of manifolds by examining their isometry groups and the isometry groups of their -models.
@article{701769, title = {Isometry groups of $k$-curvature homogeneous pseudo-Riemannian manifolds}, booktitle = {Proceedings of the 25th Winter School "Geometry and Physics"}, series = {GDML\_Books}, publisher = {Circolo Matematico di Palermo}, address = {Palermo}, year = {2006}, pages = {[99]-110}, mrnumber = {MR2287129}, zbl = {1125.53051}, url = {http://dml.mathdoc.fr/item/701769} }
Gilkey, P.; Nikčević, S. Isometry groups of $k$-curvature homogeneous pseudo-Riemannian manifolds, dans Proceedings of the 25th Winter School "Geometry and Physics", GDML_Books, (2006), pp. [99]-110. http://gdmltest.u-ga.fr/item/701769/