@article{10_4064_aa126_4_6,
     author = {Nils Bruin and Julio Fern\'andez and Josep Gonz\'alez and Joan-C. Lario},
     title = {Rational points on twists of $X_0(63)$},
     journal = {Acta Arithmetica},
     pages = {361--385},
     publisher = {mathdoc},
     volume = {126},
     number = {4},
     year = {2007},
     doi = {10.4064/aa126-4-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa126-4-6/}
}