d-Orthogonality of Hermite type polynomials. - Imed Lamiri; Abdelwaheb Ouni (Appl. Math. Comput., 2008)

On Askey-scheme and d-orthogonality, I: A characterization theorem. - Youssèf Ben Cheikh; Imed Lamiri; Abdelwaheb Ouni (J. Comput. Appl. Math., 2009)

d-orthogonality of Little q-Laguerre type polynomials. - Youssèf Ben Cheikh; Imed Lamiri; Abdelwaheb Ouni (J. Comput. Appl. Math., 2011)