@article{mc1153, author = {Ganchev, Georgi and Milousheva, Velichka}, title = {Meridian surfaces of elliptic or hyperbolic type in the four-dimensional Minkowski space}, journal = {Mathematical Communications}, volume = {21}, number = {1}, year = {2016}, pages = { 1-21}, language = {eng}, url = {http://dml.mathdoc.fr/item/mc1153} }
Ganchev, Georgi; Milousheva, Velichka. Meridian surfaces of elliptic or hyperbolic type in the four-dimensional Minkowski space. Mathematical Communications, Tome 21 (2016) no. 1, pp. 1-21. http://gdmltest.u-ga.fr/item/mc1153/