Rahimian, Sepehr, and Keyvan Salehi. “Definition, Classification, and Characteristics of Indicator Systems: A Systematic Review”. International Journal of Innovation Management and Organizational Behavior (IJIMOB) (January 1, 2026): 1–14. Accessed December 5, 2025. https://journals.kmanpub.com/index.php/ijimob/article/view/4391.