Gao Hong-Li, Zhao Yong-Zhi, Liu Ge-Si, Chen You-Chuan, Zheng Jin-Yang. Effect of damping on segregation of size-type binary granularsystems in a rotating horizontal drumJ. Acta Physica Sinica, 2011, 60(7): 074501. DOI: 10.7498/aps.60.074501