@article{GDZPPN002297795,
title = {On kth Roots in Power Series Rings.},
journal = {Mathematische Annalen},
volume = {174},
year = {1967},
pages = {327-333},
zbl = {0144.03502},
url = {http://dml.mathdoc.fr/item/GDZPPN002297795}
}
BROWN, W.G. On kth Roots in Power Series Rings.. Mathematische Annalen, Tome 174 (1967) pp. 327-333. http://gdmltest.u-ga.fr/item/GDZPPN002297795/