Соответствующие результаты приведены в главе 7 Watts (1999).

J. Wallinga, K. J. Edmunds, and M. Kretzschmar, “Perspective: Human contact patterns and the spread of airborne infectious diseases,” Trends in Microbiology 7 (1999), pp. 372–377; M. J. Keeling, “The effects of local spatial structure on epidemiological invasions,” Proceedings of the Royal Society of London, Series B; Biological Sciences 266 (1999), pp. 859–867; M. Boots and A. Sasaki, “‘Small worlds’ and the evolution of virulence: infection occurs locally and at a distance,” Proceedings of the Royal Society of London, Series B: Biological Sciences 266 (1999), pp. 1933–1938.