@article{MAN_1967__170_161544,
     author = {W.G. BROWN},
     title = {On kth {Roots} in {Power} {Series} {Rings.}},
     journal = {Mathematische Annalen},
     pages = {327--333},
     publisher = {mathdoc},
     volume = {170},
     year = {1967},
     zbl = {0144.03502},
     url = {http://geodesic.mathdoc.fr/item/MAN_1967__170_161544/}
}