@article{10_4064_aa_72_4_311_321,
     author = {Hershy Kisilevsky and Francesco Pappalardi},
     title = {On the exponent of the ideal class groups of imaginary extensions of $},
     journal = {Acta Arithmetica},
     pages = {311--321},
     publisher = {mathdoc},
     volume = {72},
     number = {4},
     year = {1995},
     doi = {10.4064/aa-72-4-311-321},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-72-4-311-321/}
}