@article{10_4153_CJM_2004_041_2,
     author = {Borwein, Jonathan M. and Borwein, David and Galway, William F.},
     title = {Finding and {Excluding} b-ary {Machin-Type} {Individual} {Digit} {Formulae}},
     journal = {Canadian journal of mathematics},
     pages = {897--925},
     year = {2004},
     volume = {56},
     number = {5},
     doi = {10.4153/CJM-2004-041-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-041-2/}
}