Peikov, P., Obreshkova, D., Draganov, G. Food supplements containing L-Tryptophan and 5-Hydroxytryptophan as precursors of serotonin, melatonin and niacine in human health. Sofia: 2009 65-69,.
Peikov, P., Obreshkova, D., Draganov, G. Food supplements containing L-Tryptophan and 5-Hydroxytryptophan as precursors of serotonin, melatonin and niacine in human health. Sofia: 2009 65-69,.
Peikov, P., Obreshkova, D., Draganov, G. (2009) Food supplements containing L-Tryptophan and 5-Hydroxytryptophan as precursors of serotonin, melatonin and niacine in human health, Sofia: 65-69,.
Peikov, P., Obreshkova, D., & Draganov, G. (2009). Food supplements containing L-Tryptophan and 5-Hydroxytryptophan as precursors of serotonin, melatonin and niacine in human health. Sofia: 65-69.
Peikov P, Obreshkova D, Draganov G. Food supplements containing L-Tryptophan and 5-Hydroxytryptophan as precursors of serotonin, melatonin and niacine in human health. Sofia: 2009. p. 65-69.