@article{10_4064_aa152_2_3,
     author = {Keisuke Arai and Fumiyuki Momose},
     title = {Points on $X_0^+(N)$ over quadratic fields},
     journal = {Acta Arithmetica},
     pages = {159--173},
     publisher = {mathdoc},
     volume = {152},
     number = {2},
     year = {2012},
     doi = {10.4064/aa152-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa152-2-3/}
}