1. Anderson, R. M., Anderson, B. & May, R. M. Infectious Diseases of Humans: Dynamics and Control (Oxford Univ. Press, 1992).
2. Bjørnstad, O. N. Epidemics: Models and Data Using R (Springer, 2018).
3. Weiss, H. The SIR model and the foundations of public health. Materials Matemàtics (2013); http://mat.uab.cat/matmat/PDFv2013/v2013n03.pdf
4. Anderson, R. M. & May, R. M. Nature 318, 323–329 (1985).