@article{10_4007_annals_2006_163_301,
     author = {Henri Darmon and Samit Dasgupta},
     title = {Elliptic units for real quadratic fields},
     journal = {Annals of mathematics},
     pages = {301--346},
     publisher = {mathdoc},
     volume = {163},
     number = {1},
     year = {2006},
     doi = {10.4007/annals.2006.163.301},
     mrnumber = {2195136},
     zbl = {1130.11030},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2006.163.301/}
}