1. Gruppentheorie und ihre Anwendung auf die Quantenmechanik der Atomspektrum;Wigner,1931
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3. PCT, Spin and Statistics, and All That;Streater,1964
4. The Wigner unitary–antiunitary theorem;Lomont;Ann. Math.,1963
5. Note on Wigner's theorem on symmetry operations;Bargmann;J. Math. Phys.,1964