@article{1103857668, author = {Ludwig, Garry}, title = {On event horizons in static space-times}, journal = {Comm. Math. Phys.}, volume = {20}, number = {1}, year = {1971}, pages = { 255-261}, language = {en}, url = {http://dml.mathdoc.fr/item/1103857668} }
Ludwig, Garry. On event horizons in static space-times. Comm. Math. Phys., Tome 20 (1971) no. 1, pp. 255-261. http://gdmltest.u-ga.fr/item/1103857668/