@article{JRAM_1973__264_151386,
     author = {Arnold K. Pizer},
     title = {Type numbers of {Eichler} orders.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {76--102},
     publisher = {mathdoc},
     volume = {264},
     year = {1973},
     zbl = {0274.12008},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1973__264_151386/}
}