1. F.V. Atkinson, Discrete and Continuous Boundary Problems, Academic Press, New York, 1964.
2. Yu.M. Berezanskii, Expansions in Eigenfunctions of Self-Adjoint Operators, Transl. Math. Monographs, Vol. 17, Amer. Math. Soc., Providence, RI, 1968.
3. F. Fu and H. Hochstadt, Inverse theorems for Jacobi matrices, J. Math. Anal. Appl., 47, 162–168 (1974).
4. M.G. Gasymov and G.Sh. Guseinov, On inverse problems of spectral analysis for infinite Jacobi matrices in the limit-circle case, Dokl. Akad. Nauk SSSR, 309, 1293-1296 (1989) (Russian)
5. Engl. transl., Soviet Math. Dokl., 40, 627-630 (1990).