@article{IM_1967__3_141880,
     author = {B. SINGH},
     title = {Unique {Factorization} in {Power} {Series} {Rings.}},
     journal = {Inventiones mathematicae},
     pages = {348--355},
     publisher = {mathdoc},
     volume = {3},
     year = {1967},
     zbl = {0171.00301},
     url = {http://geodesic.mathdoc.fr/item/IM_1967__3_141880/}
}