- Inder J. Taneja, Power-Type Semi-Selfie Numbers and Patterns, Zenodo, July 16, 2019, pp. 1-130, http://doi.org/10.5281/zenodo.3338366.
- Inder J. Taneja, Fixed and Flexible Powers Narcissistic Numbers with Division, Zenodo, February 19, 2019, pp. 1-142, http://doi.org/10.5281/zenodo.2573047.
- Inder J. Taneja, Single Digits Representations of Numbers from 1 to 20000, https://inderjtaneja.com/2019/01/01/single-letter-representations-of-numbers-from-1-to-20000/