@article{JIS_2010__13_6_a2,
     author = {Grimaldi,  Ralph P.},
     title = {Tilings, compositions, and generalizations},
     journal = {Journal of integer sequences},
     year = {2010},
     volume = {13},
     number = {6},
     zbl = {1238.11010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2010__13_6_a2/}
}