@article{BUMI_1958_3_13_4_a13,
     author = {Carlitz, Leonard},
     title = {Some biorthogonal $q$-polynomials in two variables.},
     journal = {Bollettino della Unione matematica italiana},
     pages = {555--557},
     publisher = {mathdoc},
     volume = {Ser. 3, 13},
     number = {4},
     year = {1958},
     zbl = {0086.05802},
     mrnumber = {100691},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1958_3_13_4_a13/}
}