@article{GDZPPN002088975,
title = {On Abelian Varieties with Many Endomorphisms and a Conjecture of Shimura's.},
journal = {Inventiones mathematicae},
volume = {14},
year = {1971},
pages = {225-236},
zbl = {0213.47303},
url = {http://dml.mathdoc.fr/item/GDZPPN002088975}
}
Casselman, W. On Abelian Varieties with Many Endomorphisms and a Conjecture of Shimura's.. Inventiones mathematicae, Tome 14 (1971) pp. 225-236. http://gdmltest.u-ga.fr/item/GDZPPN002088975/