@article{1103841345,
author = {Ellis, G. F. R. and MacCallum, M. A. H.},
title = {A class of homogeneous cosmological models},
journal = {Comm. Math. Phys.},
volume = {12},
number = {1},
year = {1969},
pages = { 108-141},
language = {en},
url = {http://dml.mathdoc.fr/item/1103841345}
}
Ellis, G. F. R.; MacCallum, M. A. H. A class of homogeneous cosmological models. Comm. Math. Phys., Tome 12 (1969) no. 1, pp. 108-141. http://gdmltest.u-ga.fr/item/1103841345/