Pei-yih Ting and  Dream-Ming Huang and  Xiao-Wei Huang,  A Proxy Multi-Signature Scheme with Anonymous Vetoable Delegation.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2009, vol. 29(5). 1387 - 1392
    [viewed 19 March 2024]. Available from: https://publications.waset.org/pdf/14356.