@incollection{MSMF_1974__37__75_0,
     author = {Fontaine, Jean-Marc},
     title = {Points d{\textquoteright}ordre fini d{\textquoteright}un groupe formel sur une extension non ramifi\'ee de $\mathbb {Z}_p$},
     booktitle = {Journ\'ees arithm\'etiques (Grenoble, 1973)},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     pages = {75--79},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {37},
     year = {1974},
     doi = {10.24033/msmf.131},
     mrnumber = {55 #12731},
     zbl = {0309.14037},
     url = {http://www.numdam.org/articles/10.24033/msmf.131/}
}