Nguyễn, H., 		Lê, S., & 		Phạm, T.
(2016).
 Some Improvements of Fuzzy Clustering Algorithms Using Picture Fuzzy Sets and Applications For Geographic Data Clustering.
<em>VNU Journal Of Science: Computer Science And Communication Engineering, 32</em>(3).
Retrieved from <a href="//jcsce.vnu.edu.vn/index.php/jcsce/article/view/135" target="_new">//jcsce.vnu.edu.vn/index.php/jcsce/article/view/135</a>