@article{10_4171_dm_234,
     author = {Johannes Huisman and Indranil Biswas},
     title = {Rational real algebraic models of topological surfaces},
     journal = {Documenta mathematica},
     pages = {549--567},
     year = {2007},
     volume = {12},
     doi = {10.4171/dm/234},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/234/}
}