WASET
    Yanchao Wang and  Rajshekhar Sunderraman,  An Algebra for Protein Structure Data.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2009, vol. 32(8). 2020 - 2025
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/5649.