Djoen San Santoso, Tri Basuki Joewono, Andreas Wibowo, Harlan P.A. Sinaga, and Wimpy Santosa. 2012. “Public-Private Partnerships for Tollway Construction and Operation: Risk Assessment and Allocation from the Perspective of Investors”. Journal of Construction in Developing Countries 17 (2): 45–66. https://doi.org/10.21315/.