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@article{MS2_1985__56_166928, author = {Ernst S. Selmer}, title = {On the postage stamp problem with three stamp denominations, {III.}}, journal = {Mathematica Scandinavica}, pages = {105--116}, publisher = {mathdoc}, volume = {56}, year = {1985}, zbl = {0569.10031}, url = {http://geodesic.mathdoc.fr/item/MS2_1985__56_166928/} }
Ernst S. Selmer. On the postage stamp problem with three stamp denominations, III.. Mathematica Scandinavica, Tome 56 (1985), pp. 105-116. http://geodesic.mathdoc.fr/item/MS2_1985__56_166928/