1. Troyte, C. A. W. Change Ringing, London, 1869.
2. Thompson, W. H. A Note on Grandsire Triples, London, 1886. (This is reprinted in Grandsire, J. W. Snowden, London, 1905.)
3. Hamilton, W. R. Quarterly Journal of Mathematics, London, 1862, vol. V, p. 305; or Philosophical Magazine, January, 1884, series 5, vol. XVII, p. 42. (This is also described in W. W. Rouse Ball, Mathematical Recreations and Essays, Eleventh Edition, London, 1939.)