1. Alpay, D.: The Schur Algorithm, Reproducing Kernel Spaces and System Theory. Translated from the 1998 French original by Stephen S. Wilson. SMF/AMS Texts and Monographs, vol. 5. American Mathematical Society/Socie’te’ Mathe’matique de France, Providence/Paris (2001)
2. Alpay, D., Dijksma, A., Rovnyak, J., de Snoo, H.: Schur functions, operator colligations, and reproducing Kernel Pontryagin spaces. In: Operator Theory: Advances and Applications, vol. 96. Birkhäuser Verlag, Basel (1997)
3. Alpay, D., Gohberg, I., Kaashoek, M.A., Lerer, L., Sakhnovich, A.L.: Krein systems and canonical systems on a finite interval: accelerants with a jump discontinuity at the origin and continuous potentials. Int. Equ. Oper. Theory 68(1), 115–150 (2010)
4. Alpay, D., Dym, H.: Hilbert spaces of analytic functions, inverse scattering and operator models, I. Int. Equ. Oper. Theory 7, 589–741 (1984)
5. Alpay, D., Dym, H.: Hilbert spaces of analytic functions, inverse scattering and operator models, II. Int. Equ. Oper. Theory 8, 145–180 (1985)