WASET
    E. Harrer and  M. Mauerhofer and  T. Werginz,  Analysis of the Interference from Risk-Determining Factors of Cooperative and Conventional Construction Contracts .   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2017, vol. 131(11). 1562 - 1567
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/10008219.