@article{JEMS_2009_11_6_a9,
     author = {Byung Gyun Kang and Dong Yeol Oh},
     title = {Formal power series rings over a $\pi$-domain},
     journal = {Journal of the European Mathematical Society},
     pages = {1429--1443},
     publisher = {mathdoc},
     volume = {11},
     number = {6},
     year = {2009},
     doi = {10.4171/jems/186},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/186/}
}