Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1985_283_6_a0, author = {V. A. Abrashkin}, title = {Group schemes of period $p$ over the ring of {Witt} vectors}, journal = {Doklady Akademii Nauk}, pages = {1289--1294}, publisher = {mathdoc}, volume = {283}, number = {6}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1985_283_6_a0/} }
V. A. Abrashkin. Group schemes of period $p$ over the ring of Witt vectors. Doklady Akademii Nauk, Tome 283 (1985) no. 6, pp. 1289-1294. http://geodesic.mathdoc.fr/item/DAN_1985_283_6_a0/