Gao, Ruolan, and Jicai Liu. “Value of investors’ Escalation of Commitment in PPP Projects Using Real Option Thinking”. International Journal of Strategic Property Management 24, no. 5 (September 30, 2020): 348–364. Accessed November 26, 2024. https://bme.vgtu.lt/index.php/IJSPM/article/view/13120.