%0 Journal Article %A Levesque, Claude %T An Independent System of Units in Certain Algebraic Number Fields %J Canadian journal of mathematics %D 1985 %P 644-663 %V 37 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1985-034-x/ %R 10.4153/CJM-1985-034-x %F 10_4153_CJM_1985_034_x