Directed segregation in compartmentalized bi-disperse granular gas
Sajjad Hussain Shah, Li Yin-Chang(李寅阊), Cui Fei-Fei(崔非非), Zhang Qi(张祺), and Hou Mei-Ying(厚美瑛)
Chin. Phys. B . 2012, (1): 14501 -014501 .  DOI: 10.1088/1674-1056/21/1/014501