PHAM MINH CHUAN; LE HOANG SON; VU KHANH QUY; NGUYEN DINH CHIEN. A NOVEL HYBRID META-HEURISTIC ALGORITHM BASED ON BLACK HOLE AND HARMONY SEARCH FOR FUZZY CLUSTERING PROBLEM. UTEHY Journal of Applied Science and Technology, v. 27, p. 47-53, 12 Oct. 2020.