@article{1103842029, author = {Goenner, Hubert}, title = {Einstein tensor and generalizations of Birkhoff's theorem}, journal = {Comm. Math. Phys.}, volume = {16}, number = {1}, year = {1970}, pages = { 34-47}, language = {en}, url = {http://dml.mathdoc.fr/item/1103842029} }
Goenner, Hubert. Einstein tensor and generalizations of Birkhoff's theorem. Comm. Math. Phys., Tome 16 (1970) no. 1, pp. 34-47. http://gdmltest.u-ga.fr/item/1103842029/