Saprikin, S.M. and Arov, D.Z. (2001) “Maximal solutions for embedding problem for a Generalized Schur function and optimal dissipative scattering systems with Pontryagin state spaces”, Methods of Functional Analysis and Topology, 7(4), pp. 69–80. Available at: https://zen.imath.kiev.ua/index.php/mfat/article/view/167 (Accessed: 18 December 2025).