Juan Liu Xiaohong Deng Wangchun Li Kangting Li CG-PBFT: an efficient PBFT algorithm based on credit grouping. 74 2024 December 13 J. Cloud Comput. 1 https://doi.org/10.1186/s13677-024-00643-7 db/journals/jcloudc/jcloudc13.html#LiuDLL24