@article{RLIN_1991_9_2_1_a1,
     author = {Benci, Vieri and Fortunato, Donato and Giannoni, Fabio},
     title = {Some results on the existence of geodesics in static {Lorentz} manifolds with singular boundary},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {17--23},
     publisher = {mathdoc},
     volume = {Ser. 9, 2},
     number = {1},
     year = {1991},
     zbl = {0737.53059},
     mrnumber = {167940},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_1991_9_2_1_a1/}
}