Fatemeh DB, Loo CK, Kanagaraj G, Ponnambalam SG. A hybrid SP-QPSO algorithm with parameter free adaptive penalty method for constrained global optimization problems. JMMST [Internet]. 2018 Sep. 13 [cited 2024 Nov. 21];1:15-26. Available from: https://journal.ump.edu.my/jmmst/article/view/195