The following resources provide supplemental information that pertains to the topic in this module.

RR Levine, CA Walsh and RD Schwartz (2000). Pharmacology: Drug Actions and Reactions, Parthenon Publishing Group, New York. Chapters 4-6.

MR Harkey (1993). Anatomy and physiology of hair. Forensic Science International. 63:9-18.

CE Orfanos and R Happle (1990). Hair and Hair Diseases, Springer Verlag, New York. Chapters 6 and 8.

GL Henderson, MR Harkey and C Zhou (1996). Incorporation of isotopically labeled cocaine and metabolites into human hair: Dose response relationships. Journal of Analytical Toxicology. 20:1-12.