Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1964__39_139280, author = {Joseph A. Wolf}, title = {Isotropic {Manifolds} of {Indefinite} {Metric.}}, journal = {Commentarii mathematici Helvetici}, pages = {21--64}, publisher = {mathdoc}, volume = {39}, year = {1964}, zbl = {0125.39203}, url = {http://geodesic.mathdoc.fr/item/CMH_1964__39_139280/} }
Joseph A. Wolf. Isotropic Manifolds of Indefinite Metric.. Commentarii mathematici Helvetici, Tome 39 (1964), pp. 21-64. http://geodesic.mathdoc.fr/item/CMH_1964__39_139280/