@article{10_4064_aa170216_27_4,
     author = {Antonio Lei},
     title = {Estimating class numbers over metabelian extensions},
     journal = {Acta Arithmetica},
     pages = {347--364},
     publisher = {mathdoc},
     volume = {180},
     number = {4},
     year = {2017},
     doi = {10.4064/aa170216-27-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa170216-27-4/}
}