S. Hellam and  Y. Oulahrir and  F. El Mounchid and  A. Sadiq and  S. Mbarki,  3D Objects Indexing Using Spherical Harmonic for Optimum Measurement Similarity.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 97(1). 241 - 246
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10000379.