Liljeros, Fredrik; Christofer R. Edling; Luis A. Nunes Amaral (2003). "Sexual networks: implications for the transmission of sexually transmitted infections". Microbes and Infection. 5 (2): 189–196. doi:10.1016/s1286-4579(02)00058-8. PMID12650777.
Liljeros, Fredrik; Christofer R. Edling; Luis A. Nunes Amaral (2003). "Sexual networks: implications for the transmission of sexually transmitted infections". Microbes and Infection. 5 (2): 189–196. doi:10.1016/s1286-4579(02)00058-8. PMID12650777.