Vorob'ev IV. Expansion of a Self-Adjoint Absolutely Continuous Singular Integral Operator in Generalized Eigenvectors and Its Diagonalization. Ukr. Mat. Zhurn. [Internet]. 2003 Jan. 25 [cited 2025 Dec. 6];55(1):138-45. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3896