1. G. Polya, “On the zeros of certain trigonometric integrals,” J. London Math. Soc. 1 (2), 98–99 (1926).
2. M. Abramowitz and I. A. Stegun, Handbook of Mathematical Functions, with Formulas,Graphs, and Mathematical Tables (Dover, New York, 1972).
3. A. Gray and G. B. Mathews, A Treatise on Bessel Functions and Their Applications to Physics, 2nd ed. (Macmillan, London, 1931).
4. Higher Transcendental Functions (Bateman Manuscript Project), Ed. by A. Erdélyi (McGraw-Hill, New York, 1953), Vol. 2.
5. M. K. Kerimov, “Studies on the zeros of Bessel functions and methods for their computation,” Comput. Math. Math. Phys. 54 (9), 1337–1388 (2014).