References
- EMIT Operators Manual. Syva Corp., Palo Alto, California 1972
- Budd R. D. The changes in the frequency of use and abuse of drugs by Los Angeles County methadone maintenance patients after four years of urine drug monitoring. U. N. Bull. Narc. 1975–1979; 33, In Press
- Jain N. C., Leung W. J., Sneath T. C., Budd R. D., Chinn D. A comparison of methods used in the detection of methadone and its primary metabolite. J. Anal. Toxicol. 1977; 1: 6–9