Errata for the paper
T.H. Koornwinder and F. Bouzeffour,
Nonsymmetric Askey-Wilson polynomials as vector-valued polynomials,
Appl. Anal. 90 (2011), 731-746 (already corrected in arXiv:1006.1140v3)
last modified 30 March 2018
In formula (4.14) replace in the first term on the right the denominator
factor (1-qz^2) by (q-z^2).