J. Yang and  Y. Ma and  X. Zhang and  S. Li and  Y. Zhang,  A Minimum Spanning Tree-Based Method for Initializing the K-Means Clustering Algorithm.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2017, vol. 121(1). 13 - 17
    [viewed 03 June 2020]. Available from: https://publications.waset.org/pdf/10006049.