1. Balchen, J. G., Jenssen, N. A., & Sælid, S. (1976). Dynamic positioning using Kalman filtering and optimal control theory. Proceedings of IFAC/IFIP symposium on automation in offshore oil field operation, Bergen, Norway (pp. 183–186).
2. Balchen, J. G., Jenssen, N. A., & Sælid, S. (1980). Dynamic positioning of floating vessels based on Kalman filtering and optimal control. Proceedings of 19th IEEE Conference on decision and control (CDC’80), Albuquerque, NM (pp. 852–864).
3. Guidance and control of ocean vehicles;Fossen,1994
4. Nonlinear modelling of marine vehicles in 6 degrees of freedom;Fossen;International Journal of Mathematical Modelling of Systems,1995
5. Fossen, T. I., & Grøvlen, Å. (1998). Nonlinear output feedback control of dynamically positioned ships using vectorial observer backstepping. IEEE Transactions on Control Systems Technology (Regular Paper), TCST-6(1), 121–128.