@article{1103842615,
author = {MacCallum, M. A. H. and Ellis, G. F. R.},
title = {A class of homogeneous cosmological models. II. Observations},
journal = {Comm. Math. Phys.},
volume = {16},
number = {1},
year = {1970},
pages = { 31-64},
language = {en},
url = {http://dml.mathdoc.fr/item/1103842615}
}
MacCallum, M. A. H.; Ellis, G. F. R. A class of homogeneous cosmological models. II. Observations. Comm. Math. Phys., Tome 16 (1970) no. 1, pp. 31-64. http://gdmltest.u-ga.fr/item/1103842615/