Mouataz Zreika and  Maria Estela Varua,  Applying Hybrid Graph Drawing and Clustering Methods on Stock Investment Analysis.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 111(3). 753 - 762
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10003887.