Samira Malekmohammadi Golsefid and  Mehdi Ghazanfari and  Somayeh Alizadeh,  Customer Segmentation in Foreign Trade based on Clustering Algorithms Case Study: Trade Promotion Organization of Iran.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2007, vol. 4(4). 209 - 215
    [viewed 15 May 2021]. Available from: