@article{MS2_1990__67_2_167131,
     author = {Frank Curtis},
     title = {On formulas for the {Frobenius} number of a numerical semigroup.},
     journal = {Mathematica Scandinavica},
     pages = {190--192},
     publisher = {mathdoc},
     volume = {67},
     number = {2},
     year = {1990},
     zbl = {0734.11009},
     url = {http://geodesic.mathdoc.fr/item/MS2_1990__67_2_167131/}
}