@article{1103841574, author = {Geroch, Robert}, title = {Limits of spacetimes}, journal = {Comm. Math. Phys.}, volume = {12}, number = {1}, year = {1969}, pages = { 180-193}, language = {en}, url = {http://dml.mathdoc.fr/item/1103841574} }
Geroch, Robert. Limits of spacetimes. Comm. Math. Phys., Tome 12 (1969) no. 1, pp. 180-193. http://gdmltest.u-ga.fr/item/1103841574/