@article{EXMATH_2005_2005_1_a17,
     author = {Senlin, Wu and Donghai, Ji and Alonso, Javier},
     title = {Elipses m\'etricas en planos de {Minkowski.}},
     journal = {Extracta mathematicae},
     pages = {273-280},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_2005_2005_1_a17/}
}