RISNAWATI, M. 2013. PENGARUH PENAMBAHAN ION LOGAM Ca2+ TERHADAP AKTIVITAS ENZIM PAPAIN (THE ADDITION EFFECT OF THE METAL IONS Ca2+ ON THE PAPAIN ACTIVITIES). Unesa Journal of Chemistry. 2, 1 (Jan. 2013). DOI:https://doi.org/10.26740/ujc.v2n1.p%p.