I originally posted this in the Science Book and discussion forum but received no help. Am posting it here, hoping that I will.(adsbygoogle = window.adsbygoogle || []).push({});

I was looking for material that would go over the Wigner Eckart theorem and mathematics of Angular Momentum in more rigor than the traditional texts do (in specific Ballentine). I am not only looking for books, but any papers, articles which treat the following in a more rigorous mathematical footing would be appreciated.

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# Wigner Eckart theorem

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