@article{10_4064_aa150_4_5,
     author = {Qin Yue},
     title = {Class groups under relative quadratic extensions},
     journal = {Acta Arithmetica},
     pages = {399--414},
     publisher = {mathdoc},
     volume = {150},
     number = {4},
     year = {2011},
     doi = {10.4064/aa150-4-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa150-4-5/}
}