Villarruel, F X Compaction of rods: relaxation and ordering in vibrated, anisotropic granular material. [electronic resource] - Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Jun 2000 - 6914-21 p. digital Publication Type: Journal Article ISSN: 1063-651X Standard No.: 10.1103/physreve.61.6914 doi