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@article{CM_1974__29_3_287_0, author = {Cox, Lawrence H.}, title = {Formal $A$-modules over $p$-adic integer rings}, journal = {Compositio Mathematica}, pages = {287--308}, publisher = {Noordhoff International Publishing}, volume = {29}, number = {3}, year = {1974}, mrnumber = {364267}, zbl = {0295.14020}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1974__29_3_287_0/} }
Cox, Lawrence H. Formal $A$-modules over $p$-adic integer rings. Compositio Mathematica, Tome 29 (1974) no. 3, pp. 287-308. http://geodesic.mathdoc.fr/item/CM_1974__29_3_287_0/