%0 Journal Article %A G. R. Goodson %T On the multiplicity function of ergodic group extensions of rotations %J Studia Mathematica %D 1992 %P 157-174 %V 102 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-102-2-157-174/ %R 10.4064/sm-102-2-157-174 %G en %F 10_4064_sm_102_2_157_174