@article{MM2_1997__94_2_156344,
     author = {Yuji Hasegawa},
     title = {Q-curves over quadratic fields.},
     journal = {Manuscripta mathematica},
     pages = {347--364},
     publisher = {mathdoc},
     volume = {94},
     number = {2},
     year = {1997},
     zbl = {0909.11017},
     url = {http://geodesic.mathdoc.fr/item/MM2_1997__94_2_156344/}
}