%0 Journal Article %A Bulant, Michal %T On Washington group of circular units of some composita of quadratic fields %J Mathematica slovaca %D 2005 %P 39-46 %V 55 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_2005__55_1_a3/ %G en %F MASLO_2005__55_1_a3