Harkey, M. R. (December 1993). "Anatomy and physiology of hair". Forensic Science International. Hair Analysis as a Diagnostic Tool for Drugs of Abuse Investigation. 63 (1): 9–18. doi:10.1016/0379-0738(93)90255-9. ISSN0379-0738. PMID8138238.
Araújo, Rita; Fernandes, Margarida; Cavaco-Paulo, Artur; Gomes, Andreia (2010). "Biology of Human Hair: Know Your Hair to Control It". Biofunctionalization of Polymers and their Applications. Advances in Biochemical Engineering/Biotechnology. Vol. 125. pp. 121–43. doi:10.1007/10_2010_88. hdl:1822/15299. ISBN978-3-642-21948-1. PMID21072698. S2CID21502785.
Araújo, Rita; Fernandes, Margarida; Cavaco-Paulo, Artur; Gomes, Andreia (2010). "Biology of Human Hair: Know Your Hair to Control It". Biofunctionalization of Polymers and their Applications. Advances in Biochemical Engineering/Biotechnology. Vol. 125. pp. 121–43. doi:10.1007/10_2010_88. hdl:1822/15299. ISBN978-3-642-21948-1. PMID21072698. S2CID21502785.
Harkey, M. R. (December 1993). "Anatomy and physiology of hair". Forensic Science International. Hair Analysis as a Diagnostic Tool for Drugs of Abuse Investigation. 63 (1): 9–18. doi:10.1016/0379-0738(93)90255-9. ISSN0379-0738. PMID8138238.
Araújo, Rita; Fernandes, Margarida; Cavaco-Paulo, Artur; Gomes, Andreia (2010). "Biology of Human Hair: Know Your Hair to Control It". Biofunctionalization of Polymers and their Applications. Advances in Biochemical Engineering/Biotechnology. Vol. 125. pp. 121–43. doi:10.1007/10_2010_88. hdl:1822/15299. ISBN978-3-642-21948-1. PMID21072698. S2CID21502785.
Araújo, Rita; Fernandes, Margarida; Cavaco-Paulo, Artur; Gomes, Andreia (2010). "Biology of Human Hair: Know Your Hair to Control It". Biofunctionalization of Polymers and their Applications. Advances in Biochemical Engineering/Biotechnology. Vol. 125. pp. 121–43. doi:10.1007/10_2010_88. hdl:1822/15299. ISBN978-3-642-21948-1. PMID21072698. S2CID21502785.
Harkey, M. R. (December 1993). "Anatomy and physiology of hair". Forensic Science International. Hair Analysis as a Diagnostic Tool for Drugs of Abuse Investigation. 63 (1): 9–18. doi:10.1016/0379-0738(93)90255-9. ISSN0379-0738. PMID8138238.