Guasch, J. L., Laffont, J. J., & Straub, S. (2008). Renegotiation of concession contracts in Latin America. Evidence from the water and transport sectors. International Journal of Industrial Organization, 26(2), 421–442. http://doi.org/10.1016/j.ijindorg.2007.05.003
Estache, A., & Saussier, S. (2014). Public-Private Partnerships: A Short Assessment (CESifo DICE Report 3/2014).