WASET
    Yuan-Jye Tseng and  Ching-Yen Chen,  A Design for Customer Preferences Model by Cluster Analysis of Geometric Features and Customer Preferences.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2018, vol. 139(7). 966 - 970
    [viewed 02 May 2024]. Available from: https://publications.waset.org/pdf/10009321.