WASET
    Gil-Eon Jeong and  Sung-Kie Youn and  K. C. Park,  Element-Independent Implementation for Method of Lagrange Multipliers.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 122(2). 354 - 358
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10006394.