Progress in tryptophan and serotonin research: proceedings Fourth Meeting of the International Study Group for Tryptophan Research ISTRY, Martinsried, Federal Republic of Germany, April 19-22, 1983 - Schlossberger, Hans G.; Steinhart, Hans; Kochen, Walter; Linzen, Bernt (Progress in tryptophan and serotonin research, 1984)