Hassi, S., and Yu. M. Arlinskii. “Compressed Resolvents of Selfadjoint Contractive Exit Space Extensions and Holomorphic Operator-Valued Functions Associated With Them”. Methods of Functional Analysis and Topology 21, no. 3 (September 25, 2015): 199–224. Accessed February 4, 2026. https://zen.imath.kiev.ua/index.php/mfat/article/view/612.