Figure in 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 has been selected for cover in Granular Matter（Issue 3, Volume 22）．
https://link.springer.com/journal/10035/volumes-and-issues/22-3