%0 Journal Article %A Andrea Bandini %T Greenberg's conjecture for ${\Bbb Z}_p^d$-extensions %J Acta Arithmetica %D 2003 %P 357-368 %V 108 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa108-4-5/ %R 10.4064/aa108-4-5 %G en %F 10_4064_aa108_4_5