Hui-Chuan Lu,  A New Bound on the Average Information Ratio of Perfect Secret-Sharing Schemes for Access Structures Based On Bipartite Graphs of Larger Girth.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2014, vol. 91(7). 1090 - 1095
    [viewed 04 May 2024]. Available from: https://publications.waset.org/pdf/9998635.