no. 1
On the existence of multiple geodesics in static space-times
Annales de l'I.H.P. Analyse non linéaire, Tome 8 (1991) no. 1, pp. 79-102. 
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     title = {On the existence of multiple geodesics in static space-times},
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     pages = {79--102},
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     number = {1},
     year = {1991},
     mrnumber = {1094653},
     zbl = {0716.53057},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1991__8_1_79_0/}
}
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Benci, V.; Fortunato, D.; Giannoni, F. On the existence of multiple geodesics in static space-times. Annales de l'I.H.P. Analyse non linéaire, Tome 8 (1991) no. 1, pp. 79-102. http://www.numdam.org/item/AIHPC_1991__8_1_79_0/

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