AUTHOR=Xu Xiaoyi , Fu Li-Yun , Liu Ning , Han Tongcheng 

TITLE=Corrigendum: On the Determination of Coordination Numbers of Coupled DEM-DFN Model for Modeling Fractured Rocks

JOURNAL=Frontiers in Earth Science

VOLUME=9

YEAR=2021

URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2021.777904

DOI=10.3389/feart.2021.777904

ISSN=2296-6463