Komarenko, A. N. “Self-Adjoint Operators Generated by Problems of Transmission With Inhomogeneous Conjugation Conditions”. Ukrains’kyi Matematychnyi Zhurnal 53, no. 12 (December 25, 2001): 1607-1622. Accessed May 18, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4382.