Critical zone of the branching crack model for earthquakes: Inherent randomness, earthquake predictability, and precursor modellingJiancang Zhuang, Mitsuhiro Matsu’ura and Peng HanEur. Phys. J. Special Topics, 230 1 (2021) 409-424DOI: https://doi.org/10.1140/epjst/e2020-000272-7