User:Jacobolus/Versine
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- Bond, John David. "The development of trigonometric methods down to the close of the XVth century." Isis 4, no. 2 (1921): 295-323. doi:10.1086/358035
- Cotter, Charles H. "Sines, versines and haversines in nautical astronomy." The Journal of Navigation 27, no. 4 (1974): 536-541.
- Shylaja, B. S. "From navigation to star hopping: Forgotten formulae." Resonance 20, no. 4 (2015): 352-359.
- Sinnott, Roger W. "Virtues of the Haversine." Sky and telescope 68, no. 2 (1984): 158.
- Stewart, Seán M. "A look back at a long-forgotten trigonometric function: the versine function and its inverse." The Mathematical Gazette 106, no. 565 (2022): 84-94.