@article{10_4153_CJM_1971_079_5,
     author = {McAdam, Stephen},
     title = {Going {Down} in {Polynomial} {Rings}},
     journal = {Canadian journal of mathematics},
     pages = {704--711},
     year = {1971},
     volume = {23},
     number = {4},
     doi = {10.4153/CJM-1971-079-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-079-5/}
}