books.google.com - This book contains peer-reviewed contributions presented at the 9th Meeting of the International Study Group of Tryptophan Research (ISTRY) held in Hamburg, October 1998. It provides a unique survey of the progress in tryptophan research and covers the research areas of psychiatry, neurology, pharmacology,...http://books.google.com/books/about/Tryptophan_Serotonin_and_Melatonin.html?id=hLYgFxCuQNoC&utm_source=gb-gplus-shareTryptophan, Serotonin, and Melatonin