@article{BSMF_1971__99__247_0,
     author = {O'Malley, Matthew J.},
     title = {Some remarks on the formal power series ring},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {247--258},
     year = {1971},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {99},
     doi = {10.24033/bsmf.1718},
     mrnumber = {44 #6688},
     zbl = {0202.04801},
     language = {en},
     url = {https://www.numdam.org/articles/10.24033/bsmf.1718/}
}