Sanjaya, R.K. et al. 2019. An Amperometric Biosensor For Hg(II) Based On Urease/Alginate–Chitosan Membrane Modified Screen Printed Carbon Electrode. Jurnal Pijar Mipa. 14, 3 (Sep. 2019), 184–188. DOI:https://doi.org/10.29303/jpm.v14i3.1338.