@article{10_4153_CJM_1969_065_9,
     author = {Ohm, Jack},
     title = {Semi-Valuations and {Groups} of {Divisibility}},
     journal = {Canadian journal of mathematics},
     pages = {576--591},
     year = {1969},
     volume = {21},
     number = {1},
     doi = {10.4153/CJM-1969-065-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-065-9/}
}