1. Weekly Epidemiological Record, 2000. 74–75, 379–396, www.who.int/wer
2. Global AIDS Surveillance Parts I and II, 2000. Surveillance@unaids.org
3. Smittskydd (Reporting organisation of Swedish Institute for Infectious Disease Control) 6:7–8, 2000.
4. Leinikki P. HIV recombinants with significant epidemiological stability. Conference on Protection against microbial threats. Stockholm Oct. 6–9, 2000.
5. Workshop Report. Perspectives in Clinical Development of an HIV Vaccine, Fifth Framework programme, European Commission, Brussels 29–30 June, 2000.