Update in Anaesthesia - Ketamine - http://www.nda.ox.ac.uk/wfsa/html/u04/u04_010.htm Details the actions of ketamine on the body, routes of administration, indications for use, and premedication.
Ketamine in Urine by GC/MS - http://www.biochemicaldiagnostics.com/urinaryketamine.html Details a preliminary procedure for investigational use.
Erowid Ketamine Vault - http://www.erowid.org/chemicals/ketamine/ketamine.shtml Information on the drug including research, legislation, media coverage, and health, along with links, photographs, and figures.
Ketamine References on the Web - http://earthops.org/ketamine.html Basic information, an article on its use in drug culture, and a summary of its sedative effects.
Ketamine - http://www.usdoj.gov/dea/concern/ketamine.html Brief description of its use and effects, along with legal classification, by the U.S. Department of Justice Drug Enforcement Administration.