%0 Journal Article %A Michael Fried %A Pierre Debes %T Rigidity and real residue class fields %J Acta Arithmetica %D 1990 %P 291-323 %V 56 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-56-4-291-323/ %R 10.4064/aa-56-4-291-323 %G en %F 10_4064_aa_56_4_291_323