M. Sultana and  A. Rahman and  S. Chowdhury,  An Overview of Issues to Consider Before Introducing Performance-Based Road Maintenance Contracting.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2012, vol. 62(2). 137 - 142
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/11936.