[1] 秦四清，李造鼎. 岩石声发射的损伤模式及其在地震研究中的初步应用[J]. 中国地震，1993，9(1)：54–59.(QIN Siqing，LI Zaoding. A damage model of acoustic emission in rock and its initial application in seismological research[J]. Earthquake Research in China，1993，9(1)：54–59.(in Chinese))

[2] 赵永红，黄杰藩，侯建军，等. 岩石细观破裂的试验观测研究及其对认识地震活动性的启示[J]. 地球物理学报，1995，38(5)：627–635.(ZHAO Yonghong，HUANG Jiefan，HOU Jianjun，et al. Experimental study of meso-fractures in rock and its implication for understanding seismic activities[J]. Chinese Journal of Geophysics，1995，38(5)：627–635.(in Chinese))

[3] 梁正召，唐春安，朱万成，等. 岩石非均匀性对震级–频度关系的影响的数值模拟[J]. 地震研究，2003，26(2)：151–155.(LIANG Zhengzhao，TANG Chun′an，ZHU Wangcheng，et al. Numerical simulation of influence of rock heterogeneity on the relation between magnitude and frequency[J]. Journal of Seismological Research，2003，26(2)：151–155.(in Chinese))

[4] 李庶林，尹贤刚，王泳嘉，等. 单轴受压岩石破坏全过程声发射特征研究[J]. 岩石力学与工程学报，2004，23(15)：2 499–2 503.(LI Shulin，YIN Xiangang，WANG Yongjia，et al. Studies of acoustic emission characteristics of uniaxial compressive rock failure[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(15)：2 499–2 503.(in Chinese))

[5] 张  茹，谢和平，刘建锋，等. 单轴多级加载岩石破坏声发射特性试验研究[J]. 岩石力学与工程学报，2006，25(12)：2 584–2 588. (ZHANG Ru，XIE Heping，LIU Jianfeng，et al. Experimental study of acoustic emission characteristics of rock failure under uniaxial multilevel loadings[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(12)：2 584–2 588.(in Chinese))

[6] 赵兴东，李元辉，袁瑞甫，等. 基于声发射定位的岩石裂纹动态演化过程研究[J]. 岩石力学与工程学报，2007，26(5)：944–949. (ZHAO Xingdong，LI Yuanhui，YUAN Ruifu，et al. Study of crack dynamic propagation process of rock samples based on acoustic emission location[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(5)：944–949.(in Chinese))

[7] 尹贤刚，李庶林，唐海燕. 岩石破坏声发射强度分形特征研究[J]. 岩石力学与工程学报，2005，24(19)：3 512–3 516.(YIN Xiangang，LI Shulin，TANG Haiyan. Study of strength fractal features of acoustic emission in process of rock failure[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(19)：3 512–3 516.(in Chinese))

[8] 曾正文，马  谨，刘力强，等. 岩石破裂扩展过程中的声发射b值动态特征及意义[J]. 地震地质，1995，17(1)：7–11.(ZENG Zhengwen，MA Jin，LIU Liqiang，et al. b-value dynamic features of AE during rock mass fracturing and their significances[J]. Seismology and Geology，1995，17(1)：7–11.( in Chinese))

[9] VERE-JONES D. Statistical theories of crack propagation[J]. Mathematical Geology，1976，9(5)：455–481.

[10] JAUME S C，SYKES L R. Evolving towards a critical point：a review of accelerating seismic moment/energy release prior to large great earthquakes[J]. Pure and Applied Geophysics，1999，155(2–4)：279–305.

[11] ZÖLLER G，HAINZL S，KURTHS J. Observation of growing correlation length as an indicator for critical point behavior prior to large earthquakes[J]. Journal of Geophysical Research，2001，106(B2)：2 167–2 175.

[12] 荣代潞，李亚荣，刘旭宙. 甘肃及邻近地区几次中强地震前地震空间相关长度增长的研究[J]. 地震学报，2004，26(5)：509–515. (RONG Dailu，LI Yarong，LIU Xuzhou. Study of growing correlation length prior to the earthquakes occurred in Gansu province and its nearby area[J]. Acta Seismologica Sinica，2004，26(5)：509–515.(in Chinese))

[13] TYUPKIN Y S，GIOVAMBATTISTA R D. Correlation length as an indicator of critical point behavior prior to a large earthquake[J]. Earth and Planetary Science Letters，2005，230(1–2)：85–96.

[14] 刘建坡，王洪勇，杨宇江，等. 不同岩石声发射定位算法及其试验研究[J]. 东北大学学报(自然科学版)，2009，30(8)：1 193–1 196. (LIU Jianpo，WANG Hongyong，YANG Yujiang，et al. Experimental study of different rock locating algorithms with acoustic emission[J]. Journal of Northeastern University(Natural Science)，2009，30(8)：      1 193–1 196.(in Chinese))

[15] FROHILCH C，DAVIS S D. Single-link cluster analysis as a method to evaluate spatial and temporal properties of earthquake catalogues[J]. International Journal of Geophysics，1990，100(1)：19–32.

[16] 刘  振，周蕙兰. 单键群方法的算法研究和程序实现[J]. 中国科学院研究生院学报，1997，14(1)：57–65.(LIU Zhen，ZHOU Huilan. Study of single-link cluster algorithm and its implementation[J]. Journal of the Graduate School of the Chinese Academy of Sciences，1997，14(1)：57–65.(in Chinese))

[17] 马延路，周蕙兰. 用单键群方法研究中国地震时空分布的统计特征[J]. 地球物理学报，2000，43(2)：175–183.(MA Yanlu，ZHOU Huilan. Temporal and spatial statistical characteristics of earthquakes in China by single-link cluster method[J]. Chinese Journal of Geophysics，2000，43(2)：175–183.(in Chinese))

[18] BRUCE A，WALLACE D. Critical point phenomena：universal physics at large length scales[C]// The New Physics. New York：Cambridge University Press，1989：236–267.

[19] BOWMAN D D，OUILLON G，SAMMIS C G，et al. An observational test of the critical earthquake concept[J]. Journal of Geophysical Research，1998，103(NB10)：24 359–24 372.

[20] TURCOTTE D L，NEWMEN W I，SHCHERBAKOV R. Micro and macroscopic model of rock fracture[J]. International Journal of Geophysics，2003，152(3)：718–728.

[21] BAK P，TANG C. Earthquakes as a self-organized critical phenomenon[J]. Journal of Geophysical Research，1989，94(B11)：15 635–15 637.

[22] SEBASTIAN H，GERT Z，JÜRGEN K，et al. Seismic quiescence as an indicator for large earthquake in a system of self-organized criticality[J]. Geophysical Research Letters，2000，27(5)：597–600.

[23] 谢和平. 分形–岩石力学导论[M]. 北京：科学出版社，1996.(XIE Heping. Introduction to fractal rock mechanics[M]. Beijing：Science Press，1996.(in Chinese))