1. Statistical Methods for Criminology and Criminal Justice;Bachman,1997
2. Workplace drug testing by hair analysis;Baumgartner,1999
3. Assessing drug use in the workplace: A comparison of self-report, urinalysis, and hair analysis;Cook,1997
4. Henderson, G., Harkey, M., Jones, R., 1993. Final Report: Hair analysis for drugs of abuse. National Institute of Justice, Grant #90-NIJ-CX-0012, Washington, DC.
5. Incorporation of isotopically labeled cocaine into human hair: Race as a factor;Henderson;Journal of Analytical Toxicology,1998