1[1]Frey FW, Abrutyn E, Metzger DS, et al. Focal Networks and HIV Risk Among African-American Male Intravenous Drug Users[A].Needle RH, Genser SG, Trotter RT, eds. Social Networks, Drug Abuse, and HIV Transmission[ M]. NIDA Research Monograph 151.Rockville, MD: National Institute on Drug Abuse, 1995, 89 - 108.
2[2]Neaigus A, Friedman SR, Curtis R, et al. The Relevance of Drug Injectors' Social and Risk Networks for Understanding and Preventing HIV Infection[J]. Soc SCi Med, 1994, 38(1) :67 - 78.
3[3]Freeman, L. C. Centrality in social networks: Conceptual clarification[J]. Soc Netw, 1979, 1:215 - 239.
4[4]Rothenberg RB, Potterat J J, Woodhouse DE, et al. Social network dynamics and HIV Transmission[J]. AIDS, 1998, 12:1529- 1536.
5[5]Singer M, Zhongke J, Sehensul J v, et al. AIDS and the IV drug user:The local context in prevention efforts[J ]. Med Anthropol, 1992, 14:285 - 306.
6[6]Neaigus A, Friedman SR, Goldstein M, et al. Using Dyadic Data for a Network Analysis of HIV Infection and Risk Behaviors Among Injecting Drug Users[A]. Needle RH, Genser SG, Trotter RT, eds. Social Networks, Drug Abuse, and HIV Transmission[ M]. NIDA Research Monograph 151. Rockville, MD: National Institute on Drug Abuse,1995, 20 - 37.
7[7]Obbo C. HIV transmission through social and geographical networkds in Uganda. Soc Sci Med, 1993, 36(7):949- 955.
8[8]Magura S, Shaprio JL, Siddiqui Q, et al. Variables influencing condom use among intravenous drug users. Am[ J ] J Publ Hlth, 1990, 80: 82 -84.
9[9]Jose B, Friedman SR, Neaigus A, et al. Condom use among drug injectors in an organizing project neighborhood [ A]. Community-based AIDS Prevention among Intravenous Drug Users and their Sexual Partners:The Many Faces of HIV Disease[M]. pp. 280 - 290. Nova Research Company, Bethesda, MD, 1992.
10[10]Williams ML, Zhou ZZ, Siegal HA, et al. A Comparison of Drug Use Networks Across Three Cities[ A]. Needle RH, Genser SG, Trotter RT, eds. Social Networks, Drug Abuse, and HIV Transmission [M].NIDA Research Monograph 151. Rockville, MD: National Institute on Drug Abuse, 1995:109 - 130
