@article{1103858809,
author = {MacCallum, M. A. H. and Taub, A. H.},
title = {The averaged Lagrangian and high-frequency gravitational waves},
journal = {Comm. Math. Phys.},
volume = {29},
number = {1},
year = {1973},
pages = { 153-169},
language = {en},
url = {http://dml.mathdoc.fr/item/1103858809}
}
MacCallum, M. A. H.; Taub, A. H. The averaged Lagrangian and high-frequency gravitational waves. Comm. Math. Phys., Tome 29 (1973) no. 1, pp. 153-169. http://gdmltest.u-ga.fr/item/1103858809/