ALTUN, Ozlen; BILCEN, Selin. Spectrophotometric investigation of DL-tryptophan in the presence of Ni(II) or Co(II) ions. European Journal of Chemistry, [S. l.], v. 3, n. 4, p. 411–415, 2012. DOI: 10.5155/eurjchem.3.4.411-415.482. Disponível em: https://www.eurjchem.com/index.php/eurjchem/article/view/482. Acesso em: 2 may. 2024.