1. The Relations of Smell, Taste, and the Common Chemical Sense in Vertebrates;Parker;J. Acad. Natl Sci. Philadelphia,1912
2. Peripheral Acute Pain Mechanisms;Treede;Ann. Med.,1995
3. Hypothesis for Novel Classes of Chemoreceptors Mediating Chemogenic Pain and Itch;LaMotte,1988
4. Substances Producing Pain and Itch;Keele,1964