1. Koshy, T., Gaz, Z., Math. Gazette, 55(532), 96, 2011.
2. Koshy, T., Gaz, Z., Math. Scientist, 38(2), 86, 2013.
3. Gay, T., Appl. Math. E-Notes, 18, 100, 2018.
4. Horadam, A.F., Fibonacci Quarterly, 34, 40, 1996.
5. Jordan, J.H., Fibonacci Quarterly, 3, 315, 1965.