@article{GDZPPN00221119X,
title = {On the group of components of a N\'eron model.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {435},
year = {1993},
pages = {109-160},
zbl = {0781.14029},
url = {http://dml.mathdoc.fr/item/GDZPPN00221119X}
}
Lorenzini, Dino J. On the group of components of a Néron model.. Journal für die reine und angewandte Mathematik, Tome 435 (1993) pp. 109-160. http://gdmltest.u-ga.fr/item/GDZPPN00221119X/