TY-JOURAU-Stevic-2007DA-2008/02/03TI-高端差异周期SP-0137VL-2007AB-SN-1026-0226UR-https://doi.org/101155/2007/137DO-10.1155/2007/13737JF-Discrete自然与社会动态PB-Hindawi发布公司KW-ER