A characterization of “classical” d-orthogonal polynomials

On d-orthogonality of the Sheffer systems associated to a convolution semigroup

Journal of Computational and Applied Mathematics

d-orthogonality via generating functions

Journal of Computational and Applied Mathematics - Special issue: Special functions in harmonic analysis and applications

On d-orthogonality of the Sheffer systems associated to a convolution semigroup

Journal of Computational and Applied Mathematics

Generalized qd algorithm for block band matrices

Numerical Algorithms