Sekher, A., L. Haga, and S. Dia. “The Impact of Adopting the International Specifications Standard ISO 26000 in Achieving the Purple Economy: Case Study of Algeria Telecom”. International Journal of Economic Perspectives, vol. 19, no. 4, Apr. 2025, pp. 1125-40, https://ijeponline.org/index.php/journal/article/view/943.