@article{10_4064_aa_47_3_263_276,
     author = {Kenneth Hardy and Kenneth Williams},
     title = {A congruence relating to class number of complex quadratic fields},
     journal = {Acta Arithmetica},
     pages = {263--276},
     publisher = {mathdoc},
     volume = {47},
     number = {3},
     year = {1986},
     doi = {10.4064/aa-47-3-263-276},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-47-3-263-276/}
}