@article{articlebc4f837e,
title   = {On the interactions of metal ions with tryptophan and glyciltryptophan: a fluorescence study},
author = {Tabak, M and Sartor, G and Cavatorta, P},
year = {1989},
doi = {10.1016/0022-2313(89)90038-0},
journal   = {Journal of Luminescence}
}