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Does anyone have any ideas about an analytical solution for the following integral?

[tex]

\int_{0}^{2\pi}J_{m}\left(z_{1}\cos\theta\right)J_{n}\left(z_{2}\sin\theta\right)d\theta

[/tex]

[tex]J_{m}\left(\right)[/tex] is a Bessel function of the first kind of orderm. Thanks.

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# Integrating products of Bessel functions

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