1. Alpay, D.: The Schur Algorithm, Reproducing Kernel Hilbert Spaces and System Theory. In: SMF/AMS Texts and Monographs. American Mathematical Society, Providence, RI (2001)
2. Alpay, D., Dijksma, A., Rovnyak, J., de Snoo, H.S.V.: Schur Functions, Operator Colligations, and Reproducing Kernel Pontryagin Spaces. In: Operator Theory: Advances and Applications, vol. 96. Birkhäuser Verlag, Basel (1997)
3. Arlinskiĭ, Yu.M., Belyi, S., Tsekanovskiĭ, E.R.: Conservative Realizations of Herglotz–Nevanlinna Functions. In: Operator Theory: Advances and Applications, vol. 217. Birkhauser Verlag, Basel (2011)
4. Arov, D.Z.: Realization of matrix-valued functions according to Darlington. Izv. Akad. Nauk SSSR Ser. Mat. 37, 1299–1331 (1973) (Russian)
5. Arov, D.Z., Dym, H.: J-Contractive Matrix Valued Functions and Related Topics. In: Encyclopedia of Mathematics and Its Applications, 116. Cambridge University Press, Cambridge (2008)