On Solutions of Holonomic Divided-Difference Equations on Nonuniform Lattices. - Mama Foupouagnigni; Wolfram Koepf; Maurice Kenfack-Nangho; Salifou Mboutngam (Axioms, 2013)

Quasi-orthogonality and zeros of some 2ϕ2 and 3ϕ2 polynomials. - Pinaki Prasad Kar; Kerstin Jordaan; Priyabrat Gochhayat; Maurice Kenfack-Nangho (J. Comput. Appl. Math., 2020)