Rahmad Wisnu Wardana and  Eakachai Warinsiriruk and  Sutep Joy-A-Ka,  Welding Process Selection for Storage Tank by Integrated Data Envelopment Analysis and Fuzzy Credibility Constrained Programming Approach.   journal   = {International Journal of Industrial and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2018, vol. 142(10). 986 - 990
    [viewed 22 October 2019]. Available from: https://publications.waset.org/pdf/10009695.