Rychkov, D., Boldyreva, E. V., & Tumanov, N. (2013). A new structure of a serotonin salt: Comparison and conformational analysis of all known serotonin complexes. Acta crystallographica. Section C , Crystal structure communications, 69(9), 1055-1061. https://doi.org/10.1107/S0108270113019823 (Original work published 2013)