WASET
    Kati Kõrbe Kaare and  Kristjan Kuhi and  Ott Koppel,  Developing Road Performance Measurement System with Evaluation Instrument.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2012, vol. 72(12). 3525 - 3530
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/12528.