References

Nicotine patches

• Malcolm Rowland and Thomas N. Tozer, Clinical Pharmacokinetics: Concepts and Applications, 3rd edition, Lippincott Williams and Wilkins, 1995.
• S. Sobue, K. Sekiguchi, J. Kikkawa and S. Irie, 'Effect of application sites and multiple doses on nicotine pharmacokinetics in healthy male Japanese smokers following application of the transdermal nicotine patch', Journal of Clinical Pharmacology 45 (2005), 1391–1398.

World population

• United Nations, Department of Economic and Social Affairs, Population Division, World Population Prospects: The 2010 Revision ,

HIV

• Sarah P. Otto and Troy Day, A Biologist's Guide to Mathematical Modeling in Ecology and Evolution, Princeton University Press, 2007.
• D. D. Ho, A. U. Neumann, A. S. Perelson, W. Chen, J. M. Leonard and M. Markowitz, 'Rapid turnover of plasma virions and CD4 lymphocytes in HIV-1 infection', Nature 373 (1995), 123–126.
• A. S. Perelson, A. U. Neumann, M. Markowitz, J. M. Leonard and D. D. Ho, 'HIV-1 dynamics in vivo: virion clearance rate, infected cell life-span, ad viral generation time', Science 271 (1996), 1582–1586.

Radioactive decay

• John W. Tukey, Exploratory Data Analysis, Addison-Wesley, 1977.