Y. M. Dyukarev and I. Y. Serikova, “Rational matrix functions associated with the Nevanlinna-Pick problem in the class <i>S</i> [<i>a, b</i&gt;] and orthogonal on a compact interval”, Ukr. Mat. Zhurn., vol. 59, no. 6, pp. 764–770, Jun. 2007.