WASET
    E. Arsuaga Uriarte and  F. Díaz Martín,  Topology Preservation in SOM.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2008, vol. 21(9). 3192 - 3195
    [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/6385.