O. T. Ulum, M. E. Dayinia, N. Ainun, S. D. Pramesty, and Rusmini, “ANALYSIS OF RIVER WATER QUALITY AROUND PT MERTEX MOJOKERTO BASED ON PHYSICAL, CHEMICAL, AND HEAVY METAL PARAMETERS”, UJC, vol. 14, no. 2, pp. 50–55, May 2025.