1. W.A. Baumgartner and V.A. Hill, Sample Preparation Techniques, (this issue).
2. Hair analysis: techniques and potential problems;Kidwell,1992
3. D.L. Blank and D.A. Kidwell, External contamination of hair by cocaine: An issue in forensic interpretation (this issue).
4. Substantivity through cationic substitution;Goddard;Cosmet. Toiletries,1987
5. Hair Analysis: Applications in the Biomedical and Environmental Sciences,1988