Riemann boundary value problem for hyperanalytic functions. - Ricardo Abreu Blaya; Juan Bory Reyes; Dixan Peña Peña (Int. J. Math. Math. Sci., 2005)

Generating functions of orthogonal polynomials in higher dimensions. - Hendrik De Bie; Dixan Peña Peña; Frank Sommen (J. Approx. Theory, 2014)