1. The Merck Index, 14th edn, Ed. M. J. O'Neil, Merck and Co., Inc.: Whitehouse Station, NJ, USA, 2006, p. 2178
2. The Merck Index, 14th edn, Ed. M. J. O'Neil, Merck and Co., Inc.: Whitehouse Station, NJ, USA, 2006, p. 4555
3. The Merck Index, 14th edn, Ed. M. J. O'Neil, Merck and Co., Inc.: Whitehouse Station, NJ, USA, 2006, p. 5849
4. Systematic search for conglomerates among glycerol aromatic monoethers: guaifenesin and mephenesin are the cases
5. Absolute configuration and crystal packing for three chiral drugs prone to spontaneous resolution: Guaifenesin, methocarbamol and mephenesin