Qiang Yang and  Ping-An Du,  A Straightforward Approach for Determining the Weights of Decision Makers Based on Angle Cosine and Projection Method.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2015, vol. 106(10). 3335 - 3341
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10002448.