@article{10_4064_aa_40_4_375_397,
     author = {Pierre Kaplan and Kenneth Williams},
     title = {Congruences modulo 16 for the class numbers of the quadratic fields {Q(\ensuremath{\sqrt{}}\ensuremath{\pm}p)} and {Q(\ensuremath{\sqrt{}}\ensuremath{\pm}2p)} for p a prime congruent to 5 modulo 8},
     journal = {Acta Arithmetica},
     pages = {375--397},
     publisher = {mathdoc},
     volume = {40},
     number = {4},
     year = {1981},
     doi = {10.4064/aa-40-4-375-397},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-40-4-375-397/}
}