B. Bhattarai, “The Internal and external Rate of Return (IRR and ERR) Methods: A Look into Their Features and Relevance”, Economic Journal of Nepal, vol. 29, no. 1, pp. 30–37, Jan. 2006, Accessed: Jul. 16, 2026. [Online]. Available: https://nepjol.info/index.php/EJON/article/view/159