TY - JOUR AU - Della Riccia, Giacomo TI - Riordan arrays, Sheffer sequences and ``orthogonal'' polynomials JO - Journal of integer sequences PY - 2008 VL - 11 IS - 5 UR - http://geodesic.mathdoc.fr/item/JIS_2008__11_5_a5/ LA - en ID - JIS_2008__11_5_a5 ER -