WASET
    H. Ashrafi and  S. Ebrahimi and  H. Kamalzadeh,  A Robust Optimization Method for Service Quality Improvement in Health Care Systems under Budget Uncertainty.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2020, vol. 162(6). 434 - 437
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10011254.