1. [1] W. N. Bailey, Some infinite integral involving Bessel functions, II, J. London Math. Soc. 11 (1936), 16–20.
2. [2] Paul B. Garrett, Decomposition of Eisenstein series: Rankin triple products, Ann. of Math. (2) 125 (1987), no. 2, 209–235.
3. [3] Stephen Gelbart and Freydoon Shahidi, Analytic properties of automorphic $L$-functions, Perspectives in Mathematics, vol. 6, Academic Press Inc., Boston, MA, 1988.
4. [4] I. S. Gradshteyn and I. M. Ryzhik, Table of integrals, series, and products, Fourth edition prepared by Ju. V. Geronimus and M. Ju. Ceĭtlin. Translated from the Russian by Scripta Technica, Inc. Translation edited by Alan Jeffrey, Academic Press, New York, 1965.
5. [5] Tamotsu Ikeda, On the functional equations of the triple $L$-functions, J. Math. Kyoto Univ. 29 (1989), no. 2, 175–219.