@article{10_4064__41_1_21_34, author = {Gregory Galloway}, title = {Some rigidity results for spatially closed spacetimes}, journal = {Banach Center Publications}, pages = {21--34}, publisher = {mathdoc}, volume = {41}, number = {1}, year = {1997}, doi = {10.4064/-41-1-21-34}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/-41-1-21-34/} }