1. L-Trhytophan monograph. Alternative Medicine Review. Volume 11, Number 1 u 2006
2. Gellynck E, Heyninck K, Andressen KW, Haegeman G, Levy FO, Vanhoenacker P, Van
Craenenbroeck K. The serotonin 5-HT7 receptors: two decades of research. Exp
Brain Res. 2013 Oct;230(4):555-68. doi: 10.1007/s00221-013-3694-y. Epub 2013 Sep
17. Review. PubMed PMID: 24042216.
3. Szeitz A, Bandiera SM. Analysis and measurement of serotonin. Biomed Chromatogr. 2018 Jan;32(1). doi: 10.1002/bmc.4135. Epub 2017 Nov 30. Review. PubMed PMID: 29135035