1. Eradication ofpoliomyelitis: progress in the Americas;Quadros;Pediatr. Infect. Dis. J.,1991
2. The epidemiology of measles in England and Wales: Rationale for 1994 nation vaccination campaign, communicable disease report;Ramsay;CDR Rev.,1994
3. Measles, killer of millions in developing countries: Strategies of elimination and continuation control;Sabin;Eur. J. Epidemiol.,1991
4. Reproduction numbers and sub-threshold endemic equilibria for compartmental models of disease transmission;Driessche;Math. Biol.,2002
5. Dynamic models of infectious diseases as regulators of population sizes;Mena-Lorca;J. Math. Biol.,1992