@article{05232995, title = {Rational real algebraic models of topological surfaces.}, journal = {Documenta Mathematica}, volume = {12}, year = {2007}, pages = {549-567}, zbl = {1141.14037}, language = {en}, url = {http://dml.mathdoc.fr/item/05232995} }
Biswas, Indranil; Huisman, Johannes. Rational real algebraic models of topological surfaces.. Documenta Mathematica, Tome 12 (2007) pp. 549-567. http://gdmltest.u-ga.fr/item/05232995/