jgg     2012 32 (1):  13-16    ISSN: 0412-1961  CN: 21-1139/TG PHYSICAL FRACTAL AND R/S ANALYSIS OF TIME AND SPACE CLUSTERING OF EARTHQUAKES IN WESTERNHUBEI AND ITS SURROUNDING AREAS Liu Zhi ;and Yao Yunsheng Institute of Seismology, CEA, Wuhan 430071 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null