1. On the role of variable infectivity in the dynamics of the human immunodeficiency virus epidemic;Thieme,1989
2. Transmission dynamics and control of infectious diseases;Anderson,1982
3. Overall population patterns in the transmission cycle of infectious disease agents;Dietz,1982
4. The saturating contact rate in marriage and epidemic models;Heesterbeek;J Math Biol,1993
5. Models for transmission of disease with immigration of infectives;Brauer;Math Biosci,2001