@article{JIS_2006__9_4_a7,
     author = {Tripathi, Amitabha and Vijay, Sujith},
     title = {On a generalization of the coin exchange problem for three variables},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {9},
     number = {4},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2006__9_4_a7/}
}