Xu, Y., J. Skibniewski, M., Zhang, Y., P. C. Chan, A. and F. Y. Yeung, J. 2012. Developing a concession pricing model for PPP highway projects. International Journal of Strategic Property Management. 16, 2 (Jun. 2012), 201-217. DOI:https://doi.org/10.3846/1648715X.2012.688071.