Masduqi, A. . and Apriliani, E. . (2025) “Estimation of Surabaya River Water Quality Using Kalman Filter Algorithm”, IPTEK The Journal for Technology and Science, 19(3), pp. 87–91. Available at: https://journal.its.ac.id/index.php/jts/article/view/5906 (Accessed: 30 January 2026).