[1] [1] WU X P FU Y.Security risk assessment theory and methods for information systems［M］.Beijing:Science Press 2011.

[2] [2] FENG D G ZHANG Y ZHENG Y Q.Survey of information security risk assessment［J］.Journal of China Institute of Communications 2004 7(25):10-18.

[3] [3] MAO H D.A novel assessment approach based on logial exploitation graph model for network security［D］.Chang-sha:National University of Defense Technology 2008.

[4] [4] ZHANG Y Z FANG B X CHI Y et al.Risk propagation model for assessing network information systems［J］.Journal of Software 2007 18(1):137-145.

[5] [5] ZHANG Y Z TIAN Z H FANG B X, et al.Approximate arithmetic for solving problem of network risk propagation and its performance analysis［J］.Science in China(Series E:Information Sciences) 2008 38(8):1157-1168.

[6] [6] WANG J W RONG L L.Cascading failures on complex networks based on the local preferential redistribution rule of the load［J］.Acta Phys.Sin. 2009 58(6):3714-3721.

[7] [7] WANG J W RONG L L.Universal cascading failures on complex networks based on attacks［J］.Journal of Management Science 2009 22(3):113-120.

[8] [8] WANG J W RONG L L WANG D.Model for cascading failures on complex networks based on local characteristics of nodes［J］.Journal of Management Sciences in China 2010 13(8):42-50.

[9] [9] WANG J W.Study on cascading failure models on networks［D］.Dalian:Dalian University of Technology 2010.

[10] [10] WU J J GAO Z Y SUN H J.Cascade and breakdown in scale-free networks with community structure［J］.Physical Review E 2006 74(6):066111(5).

[11] [11] ALBERT R JEONG H BARABSI A L.Error and attack tolerance in complex networks［J］.Nature 2000 406(6794):378-382.

[12] [12] VALENTE X C N SARKAR A STONE H A.Two-peak and three-peak optimal complex networks［J］.Physical Review Letters 2004 92(11):118702(1)-118702(4).

[13] [13] BOLLOBS B RIORDAN O.Robustness and vulnerabi-lity of scale-free random graphs［J］.Internet Mathema-tics 2001 1(1):1-35.

[14] [14] BRODER A KUMAR R MAGHOUL F et al.Graph structure in the web［J］.Compute Networks 2000 33(1-6):309-320.

[15] [15] WANG L ZHANG J J.Centralization of complex networks［J］.Complex Systems and Complexity Science 2006 3(1):13-20.

[16] [16] XIONG J S LI J H YANG Y H et al.Compare of centrality measures of military communication network based on complexity theory［J］.Science & Technology Review 2011 29(36):38-41.