1. “The United States Pharmacopeia,” 19th rev., Mack Publishing Co., Easton, Pa., 1975, p. 304.
2. “The United States Pharmacopeia”, 19th rev., Mack Publishing Co., Easton, Pa., 1975, p. 305.
3. “The National Formulary”, 14th ed, Mack Publishing Co., Easton, Pa., 1975, p. 449.
4. Quantitative Determination of Carisoprodol, Phenacetin, and Caffeine in Tablets by Near-IR Spectrometry and Their Identification by TLC
5. Separation and Identification of Tranquilizers by Gas Chromatography.