Canh, C. X. ., Anh, N. T. ., Toi, D. V. . and Nam, N. D. . (2025) “Optimal tracking control using discrete disturbance observer for unmanned surface vessel under unknown disturbances”, International Journal of Innovative Research and Scientific Studies, 8(7), pp. 100–111. doi: 10.53894/ijirss.v8i7.10405.