@article{10_4153_CJM_1999_011_1,
     author = {Poorten, Alfred van der and Williams, Kenneth S.},
     title = {Values of the {Dedekind} {Eta} {Function} at {Quadratic} {Irrationalities}},
     journal = {Canadian journal of mathematics},
     pages = {176--224},
     year = {1999},
     volume = {51},
     number = {1},
     doi = {10.4153/CJM-1999-011-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1999-011-1/}
}