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@article{AIHPA_1971__15_2_169_0, author = {Patel, L. K. and Vaidya, P. C.}, title = {A generalized plane wave metric}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {169--175}, publisher = {Gauthier-Villars}, volume = {15}, number = {2}, year = {1971}, zbl = {0227.53024}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AIHPA_1971__15_2_169_0/} }
Patel, L. K.; Vaidya, P. C. A generalized plane wave metric. Annales de l'I.H.P. Physique théorique, Tome 15 (1971) no. 2, pp. 169-175. http://geodesic.mathdoc.fr/item/AIHPA_1971__15_2_169_0/