@article{AIHPA_1998__69_4_359_0,
author = {Giannoni, Fabio and Masiello, A. and Piccione, P.},
title = {A Morse theory for light rays on stably causal lorentzian manifolds},
journal = {Annales de l'I.H.P. Physique th\'eorique},
volume = {69},
year = {1998},
pages = {359-412},
mrnumber = {1659591},
zbl = {0920.58019},
language = {en},
url = {http://dml.mathdoc.fr/item/AIHPA_1998__69_4_359_0}
}
Giannoni, F.; Masiello, A.; Piccione, P. A Morse theory for light rays on stably causal lorentzian manifolds. Annales de l'I.H.P. Physique théorique, Tome 69 (1998) pp. 359-412. http://gdmltest.u-ga.fr/item/AIHPA_1998__69_4_359_0/
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