Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1979__54_139776, author = {R.S. Kulkarni}, title = {The values of sectional curvature in indefinite metrics.}, journal = {Commentarii mathematici Helvetici}, pages = {173--176}, publisher = {mathdoc}, volume = {54}, year = {1979}, zbl = {0393.53022}, url = {http://geodesic.mathdoc.fr/item/CMH_1979__54_139776/} }
R.S. Kulkarni. The values of sectional curvature in indefinite metrics.. Commentarii mathematici Helvetici, Tome 54 (1979), pp. 173-176. http://geodesic.mathdoc.fr/item/CMH_1979__54_139776/