Chang-Chien, Shou-Jen, Wajid Ali, and Miin-Shen Yang. “A Learning-Based EM Clustering for Circular Data With Unknown Number of Clusters”. Proceedings of Engineering and Technology Innovation 15 (April 27, 2020): 42–51. Accessed November 22, 2024. https://ojs.imeti.org/index.php/PETI/article/view/5241.