@article{10_46298_epiga_2017_volume1_2030,
     author = {Bertrand, Beno{\^\i}t and Brugall\'e, Erwan and Renaudineau, Arthur},
     title = {Haas' theorem revisited},
     journal = {\'Epijournal de G\'eom\'etrie Alg\'ebrique},
     publisher = {mathdoc},
     volume = {1},
     year = {2017},
     doi = {10.46298/epiga.2017.volume1.2030},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/epiga.2017.volume1.2030/}
}