参考文献 (4)
- The 23- and 28-day cycles: Wilhelm Fliess, Die Beziehungen zwischen Nase und weiblichen Geschlechtsorganen (Leipzig/Vienna, 1897) — where the two original rhythms were published.
- The third cycle: Alfred Teltscher, professor of engineering at Innsbruck, added the 33-day intellectual rhythm in the 1920s after studying student performance. Hermann Swoboda, professor of psychology in Vienna, had reached similar periods independently in 1904.
- Freud and Fliess: Jeffrey Moussaieff Masson (ed.), The Complete Letters of Sigmund Freud to Wilhelm Fliess, 1887–1904. Belknap Press of Harvard University Press, 1985. ISBN 978-0-674-15421-6.
- On the status of the theory: Terence M. Hines, "Comprehensive Review of Biorhythm Theory." Psychological Reports 83(1), 19–64, 1998.