@article{10_4064_aa121_2_3,
     author = {Manabu Murata},
     title = {Shimura's mass formula for an orthogonal
 group over real quadratic fields},
     journal = {Acta Arithmetica},
     pages = {125--148},
     publisher = {mathdoc},
     volume = {121},
     number = {2},
     year = {2006},
     doi = {10.4064/aa121-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa121-2-3/}
}