@article{GDZPPN002195542,
title = {Elliptic curves and canonical subgroups of formal groups.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {302},
year = {1978},
pages = {319-331},
zbl = {0385.14012},
url = {http://dml.mathdoc.fr/item/GDZPPN002195542}
}
Yui, Noriko. Elliptic curves and canonical subgroups of formal groups.. Journal für die reine und angewandte Mathematik, Tome 302 (1978) pp. 319-331. http://gdmltest.u-ga.fr/item/GDZPPN002195542/