1. American Mathematical Society Translations, Series 2, Vol. 138, Amer. Math. Society, Providence, RI, 1988. Seven papers translated from the Russian.
2. Discrete Hamiltonian Systems. Difference Equations, Continued Fractions, and Riccati Equations;Ahlbrandt,1996
3. A Course in Enumeration;Aigner,2007
4. The Classical Moment Problem and Some Related Questions in Analysis;Akhiezer,1965
5. Discrete and Continuous Boundary Problems;Atkinson,1964