Brack-Bernsen, Lis; Brack, Matthias (2004). «Analyzing shell structure from Babylonian and modern times». International Journal of Modern Physics E13 (1): 247. Bibcode:2004IJMPE..13..247B. arXiv:physics/0310126.
Heideman, M.T.; Johnson, D. H.; Burrus, C. S. (1984). «Gauss and the history of the fast Fourier transform». IEEE ASSP Magazine1 (4): 14-21. S2CID10032502. doi:10.1109/MASSP.1984.1162257.
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Brack-Bernsen, Lis; Brack, Matthias (2004). «Analyzing shell structure from Babylonian and modern times». International Journal of Modern Physics E13 (1): 247. Bibcode:2004IJMPE..13..247B. arXiv:physics/0310126.
Heideman, M.T.; Johnson, D. H.; Burrus, C. S. (1984). «Gauss and the history of the fast Fourier transform». IEEE ASSP Magazine1 (4): 14-21. S2CID10032502. doi:10.1109/MASSP.1984.1162257.