@article{10_4171_dm_189,
     author = {C. Cornut and V. Vatsal},
     title = {CM points and quaternion algebras},
     journal = {Documenta mathematica},
     pages = {263--309},
     year = {2005},
     volume = {10},
     doi = {10.4171/dm/189},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/189/}
}