@article{10_4153_CJM_1985_034_x,
     author = {Levesque, Claude},
     title = {An {Independent} {System} of {Units} in {Certain} {Algebraic} {Number} {Fields}},
     journal = {Canadian journal of mathematics},
     pages = {644--663},
     year = {1985},
     volume = {37},
     number = {4},
     doi = {10.4153/CJM-1985-034-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1985-034-x/}
}