Orthogonal matrix polynomials whose differences are also orthogonal.

Antonio J. Durán Vanesa Sánchez-Canales Orthogonal matrix polynomials whose differences are also orthogonal. 112-127 2014 179 J. Approx. Theory https://doi.org/10.1016/j.jat.2013.11.012 db/journals/jat/jat179.html#DuranS14