@article{1103857920,
author = {MacCallum, M. A. H. and Taub, A. H.},
title = {Variational principles and spatially-homogeneous universes, including rotation},
journal = {Comm. Math. Phys.},
volume = {24},
number = {2},
year = {1972},
pages = { 173-189},
language = {en},
url = {http://dml.mathdoc.fr/item/1103857920}
}
MacCallum, M. A. H.; Taub, A. H. Variational principles and spatially-homogeneous universes, including rotation. Comm. Math. Phys., Tome 24 (1972) no. 2, pp. 173-189. http://gdmltest.u-ga.fr/item/1103857920/