@article{JIS_2009__12_1_a4,
     author = {Robinson, John P.},
     title = {Some postage stamp 2-bases},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2009__12_1_a4/}
}