@article{10_4153_CJM_1972_073_7,
     author = {Qu\^e, Ng\^o Van},
     title = {Generalisation de la {Formule} de {Riemann-Hurwitz}},
     journal = {Canadian journal of mathematics},
     pages = {761--767},
     year = {1972},
     volume = {24},
     number = {5},
     doi = {10.4153/CJM-1972-073-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1972-073-7/}
}