Nobel prize to E. P. Wigner awarded in 1963 "for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles''. Co-winners M. Goeppert-Mayer and J. H. D. Jensen "for their discoveries of nuclear shell structure''
Wigner, E.P.; Über die Erhaltungssätze in der Quantenmechanik / On the Conservation Laws of Quantum Mechanics
Nachr. Ges. Wiss. Goett. P.375 (1927);
Related references More (earlier) information appears in E. P. Wigner, Z. Phys. 43 (1927) 624;
Invention of spatial parity as a quantum mechanical conserved quantity.