@article{GDZPPN002209403,
title = {On the imbeddings of imaginary quadratic orders in definite quaternion orders.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {426},
year = {1992},
pages = {91-106},
zbl = {0737.11035},
url = {http://dml.mathdoc.fr/item/GDZPPN002209403}
}
Eichler, M.; Brzezinski, J. On the imbeddings of imaginary quadratic orders in definite quaternion orders.. Journal für die reine und angewandte Mathematik, Tome 426 (1992) pp. 91-106. http://gdmltest.u-ga.fr/item/GDZPPN002209403/