@article{1028998563,
author = {Heerema, Nickolas},
title = {Derivations and embeddings of a field in its power series ring. II.},
journal = {Michigan Math. J.},
volume = {8},
number = {1},
year = {1961},
pages = { 129-134},
language = {en},
url = {http://dml.mathdoc.fr/item/1028998563}
}
Heerema, Nickolas. Derivations and embeddings of a field in its power series ring. II.. Michigan Math. J., Tome 8 (1961) no. 1, pp. 129-134. http://gdmltest.u-ga.fr/item/1028998563/