@article{10_4153_CJM_1974_085_9,
     author = {Marshall, Murray A.},
     title = {Ramification {Theory} for {Valuations} of {Arbitrary} {Rank}},
     journal = {Canadian journal of mathematics},
     pages = {908--916},
     year = {1974},
     volume = {26},
     number = {4},
     doi = {10.4153/CJM-1974-085-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-085-9/}
}