@article{MAN_1981__255_182837,
     author = {Paul Monsky and Albert A. Cuoco},
     title = {Class {Numbers} in {Zd-p-Extensions.}},
     journal = {Mathematische Annalen},
     pages = {235--258},
     publisher = {mathdoc},
     volume = {255},
     year = {1981},
     zbl = {0437.12003},
     url = {http://geodesic.mathdoc.fr/item/MAN_1981__255_182837/}
}