SALIRAWATI, Das. THE CHARACTERIZATION OF SEVERAL METAL IONS TOWARDS THE ENZYME TRYPSIN ACTIVITY. Jurnal Penelitian Saintek, Yogyakarta, Indonesia, v. 21, n. 2, p. 107–119, 2017. DOI: 10.21831/jps.v21i2.12581. Disponível em: https://journal.uny.ac.id/index.php/saintek/article/view/12581. Acesso em: 1 aug. 2025.