1. World, H: Organization report on the global tobacco epidemic. http://whqlibdoc.who.int/publications/2009/9789241563918_eng_full.pdf (2009)
2. Lahrouz, A, Omari, L, Kiouach, D, Belmaati, A: Deterministic and stochastic stability of a mathematical model of smoking. Stat. Probab. Lett. 81(8), 1276-1284 (2011)
3. Johnston, LD, O’Malley, PM, Bachman, JG: Smoking, Drinking, and Illicit Drug Use Among American Secondary School Students, College Students, and Young Adults, 1975-1992. Volume 2: College Students and Young Adults. US Department of Health and Human Services, National Institutes of Health, Bethesda (1992)
4. Bernoulli, D: Essai d’une nouvelle analyse de la mortalite causee par la petite verole, et des avantages de I’inoculation pour la prevenir. Histoire de I’Academie Royale des Sciences, memoire de mathematiques et de physique, Paris, 1-45 (1760)
5. Kermark, WO, Mckendrick, AG: Contributions to the mathematical theory of epidemics. Part I. Proc. R. Soc. Lond. Ser. A 115, 700-721 (1927)