1. Association for Assessment and Accreditation of Laboratory Animal Care (2005) (http://www.aaalac.org/).
2. Code of Federal Regulations (http://www.gpoaccess.gov/cfr/index.html).
3. Drug Enforcement Agency, Washington, DC (1997) Drugs of Abuse, Superintendent of Documents, Mail Stop SSOP, 20402-9328.
4. Drug Enforcement Agency, Washington, DC (1999a) Schedules of Controlled Substances: Placement of Ketamine into Schedule III, 64FR (133), 37673–5.
5. Drug Enforcement Agency, Washington, DC (1999b) List of Scheduling Actions and Controlled Substances, Office of Diversion Control, Drug and Chemical Evaluation, Section, 20537.