@article{10_4064_aa161_3_6,
     author = {Francesc Bars and Aristides Kontogeorgis and Xavier Xarles},
     title = {Bielliptic and hyperelliptic modular curves $X(N)$
 and the group $\mathrm {Aut}(X(N))$},
     journal = {Acta Arithmetica},
     pages = {283--299},
     publisher = {mathdoc},
     volume = {161},
     number = {3},
     year = {2013},
     doi = {10.4064/aa161-3-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa161-3-6/}
}