%0 Journal Article %A Qin Yue %T Elements of order 4 of the Hilbert kernel in quadratic number fields %J Acta Arithmetica %D 2001 %P 295-311 %V 97 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa97-4-1/ %R 10.4064/aa97-4-1 %G en %F 10_4064_aa97_4_1