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@article{KJM_2003_25_a21, author = {Emilija Ne\v{s}ovi\'c and Miroslava Petrovi\'c-Torga\v{s}ev}, title = {Some trigonometric relations in the {Lorentzian} plane}, journal = {Kragujevac Journal of Mathematics}, pages = {219 }, publisher = {mathdoc}, volume = {25}, year = {2003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/KJM_2003_25_a21/} }
Emilija Nešović; Miroslava Petrović-Torgašev. Some trigonometric relations in the Lorentzian plane. Kragujevac Journal of Mathematics, Tome 25 (2003), p. 219 . http://geodesic.mathdoc.fr/item/KJM_2003_25_a21/