Salam, M. ., and S. U. . Khan. “Risks Mitigation Practices for Multi-Sourcing Vendors in Green Software Development: Risks Mitigation Practices for Multi-Sourcing Vendors”. Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences, vol. 54, no. 1, Apr. 2021, pp. 71–87, https://ppaspk.org/index.php/PPAS-A/article/view/266.