@article{IM_1989__97_2_143700,
     author = {Jin Nakagawa},
     title = {Binary forms and orders of algebraic number fields.},
     journal = {Inventiones mathematicae},
     pages = {219--236},
     publisher = {mathdoc},
     volume = {97},
     number = {2},
     year = {1989},
     zbl = {0647.10018},
     url = {http://geodesic.mathdoc.fr/item/IM_1989__97_2_143700/}
}