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@article{MAN_1992__293_4_164967, author = {Vieri Benci and Antonio Masiello}, title = {A {Morse} index for geodesics in static {Lorentz} manifolds.}, journal = {Mathematische Annalen}, pages = {433--442}, publisher = {mathdoc}, volume = {293}, number = {4}, year = {1992}, zbl = {0735.58011}, url = {http://geodesic.mathdoc.fr/item/MAN_1992__293_4_164967/} }
Vieri Benci; Antonio Masiello. A Morse index for geodesics in static Lorentz manifolds.. Mathematische Annalen, Tome 293 (1992) no. 4, pp. 433-442. http://geodesic.mathdoc.fr/item/MAN_1992__293_4_164967/