Miyaiらによる論文（Miyai et al., “Influence of particle size on vertical plate penetration into dense cohesionless granular materials (large-scale DEM simulation using real particle size)”, Granular Matter (2019) 21: 105. doi.org/10.1007/s10035-019-0961-z）がGranular Matter誌（Issue 3, Volume 22）のカバーに選ばれました．
https://link.springer.com/journal/10035/volumes-and-issues/22-3