@article{01907118,
title = {Some characterizations of the Lorentzian spherical timelike and null curves.},
journal = {Matematichki Vesnik},
volume = {53},
year = {2001},
pages = {21-27},
zbl = {1025.53011},
language = {en},
url = {http://dml.mathdoc.fr/item/01907118}
}
Petrović-Torgašev, Miroslava; Šućurović, Emilija. Some characterizations of the Lorentzian spherical timelike and null curves.. Matematichki Vesnik, Tome 53 (2001) pp. 21-27. http://gdmltest.u-ga.fr/item/01907118/