Aitchison, Ian J. R.; MacManus, David A.; Snyder, Thomas M. Understanding Heisenberg’s “magical” paper of July 1925: A new look at the calculational details // American Journal of Physics. — 2004. — Т. 72. — С. 1370. — doi:10.1119/1.1775243. — arXiv:0404009.
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Aitchison, Ian J. R.; MacManus, David A.; Snyder, Thomas M. Understanding Heisenberg’s “magical” paper of July 1925: A new look at the calculational details // American Journal of Physics. — 2004. — Т. 72. — С. 1370. — doi:10.1119/1.1775243. — arXiv:0404009.