P. Jangid et al., “Comparative Study of Efficacy of L-5- Hydroxytryptophan and Fluoxetine in Patients Presenting with First Depressive Episode,” Asian Journal of Psychiatry 6, no. 1 (February 2013): 29–34, doi: 10.1016/j.ajp.2012.05.011; J. Angst et al., “The Treatment of Depression with L-5- Hydroxytryptophan versus Imipramine. Results of Two Open and One Double- Blind Study,” Archiv fur Psychiatrie und Nervenkrankheiten 224, no. 2 (October 11, 1977):175–86.
