WASET
    M. Oloomi-Buygi and  M. Reza Salehizadeh,  Transmission Pricing based on Voltage Angle Decomposition.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2008, vol. 17(5). 962 - 967
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/2338.