Authors: Peter R Stout; Nichole D Bynum; John M Mitchell; Michael R Baylor; Jeri D Ropero-Miller Journal: J Anal Toxicol Date: 2009-10 Impact factor: 3.367
Authors: W R Lange; B R Cabanilla; G Moler; E J Bernacki; D L Frankenfield; P J Fudala Journal: Am J Drug Alcohol Abuse Date: 1994 Impact factor: 3.829