@article{MM2_1986__57_155200,
     author = {M.L. Madan and Gabirel D. Villa Salvador},
     title = {Structure of semisimple differentials and p-class groups in {Zp-extensions.}},
     journal = {Manuscripta mathematica},
     pages = {315--350},
     publisher = {mathdoc},
     volume = {57},
     year = {1986},
     zbl = {0596.12007},
     url = {http://geodesic.mathdoc.fr/item/MM2_1986__57_155200/}
}