Hui-Chuan Lu,  A Study on the Average Information Ratio of Perfect Secret-Sharing Schemes for Access Structures Based On Bipartite Graphs.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2012, vol. 69(9). 1343 - 1348
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/13176.