@article{CLTM_1963_1963_1_a14,
     author = {Carlitz, L.},
     title = {Products of {Appell} polynomials.},
     journal = {Collectanea mathematica},
     publisher = {mathdoc},
     number = {3},
     year = {1963},
     zbl = {0163.08102},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1963_1963_1_a14/}
}