Rasid Mamat, Abd, Fatma Susilawati Mohamed, Mohamad Afendee Mohamed, Norkhairani Mohd Rawi, and Mohd Isa Awang. “Silhouette Index for Determining Optimal K-Means Clustering on Images in Different Color Models”. International Journal of Engineering and Technology 7, no. 2.14 (April 6, 2018): 105–109. Accessed March 28, 2025. https://www.sciencepubco.com/index.php/IJET/article/view/11464.