Hutapea, Tri Paus, et al. “Development of a Chromium (VI) Biosensor Using Silver-Modified Milkfish (Chanos Chanos) Gelatin and Carbon Electrodes”. Eurasian Journal of Physics and Functional Materials, vol. 8, no. 4, Mar. 2026, https://ephys.kz/index.php/journal/article/view/290.