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@article{AIHPA_1993__59_4_399_0, author = {Hayward, Sean A.}, title = {Dual-null dynamics}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {399--419}, publisher = {Gauthier-Villars}, volume = {59}, number = {4}, year = {1993}, mrnumber = {1254979}, zbl = {0794.70009}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AIHPA_1993__59_4_399_0/} }
Hayward, Sean A. Dual-null dynamics. Annales de l'I.H.P. Physique théorique, Tome 59 (1993) no. 4, pp. 399-419. http://geodesic.mathdoc.fr/item/AIHPA_1993__59_4_399_0/