@article{10_4064_aa124_2_4,
     author = {Ay\c{s}e Alaca and \c{S}aban Alaca and Kenneth S. Williams},
     title = {On the two-dimensional theta functions of the {Borweins}},
     journal = {Acta Arithmetica},
     pages = {177--195},
     publisher = {mathdoc},
     volume = {124},
     number = {2},
     year = {2006},
     doi = {10.4064/aa124-2-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa124-2-4/}
}