Fatemeh, D. B., Loo, C. K., Kanagaraj, G., & Ponnambalam, S. G. (2018). A hybrid SP-QPSO algorithm with parameter free adaptive penalty method for constrained global optimization problems. Journal of Modern Manufacturing Systems and Technology, 1, 15–26. https://doi.org/10.15282/jmmst.v1i1.195