@article{JRAM_1978__0303_0304_152064,
     author = {Noriko Yui},
     title = {Elliptic curves and canonical subgroups of formal groups.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {319--331},
     publisher = {mathdoc},
     volume = {0303_0304},
     year = {1978},
     zbl = {0385.14012},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1978__0303_0304_152064/}
}