@article{IM_1981__65_142858,
     author = {Eduardo C. Friedmann},
     title = {Ideal {Class} {Groups} in {Basic} ...p1 {x....x...ps-Extensions} of {Abelian} {Number} {Fields.}},
     journal = {Inventiones mathematicae},
     pages = {425--440},
     publisher = {mathdoc},
     volume = {65},
     year = {1981},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM_1981__65_142858/}
}