KoshmanenkoV. D. and TuhaiH. V. (2006) “Jacobi matrices associated with the inverse eigenvalue problem in the theory of singular perturbations of self-adjoint operators”, Ukrains’kyi Matematychnyi Zhurnal, 58(12), pp. 1651–1662. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3561 (Accessed: 2December2024).