Turán's inequality, nonnegative linearization and amenability properties for associated symmetric Pollaczek polynomials. - Stefan Kahler (J. Approx. Theory, 2021)

Harmonic analysis of little q-Legendre polynomials. - Stefan Kahler (J. Approx. Theory, 2023)

Dual spaces vs. Haar measures of polynomial hypergroups. - Stefan Kahler; Ryszard Szwarc (J. Approx. Theory, 2025)