Krajcin, I.; Söffker, D.: Model-Based Estimation of Contact Forces in Flexible Structures. Mathematical and Computer Modelling of Dynamical Systems, Vol. 10, Issue 3-4, 2004, pp. 303-316.

Söffker, D.: Understanding MMI from a system-theoretic view - Part I: Formalization MMI introducing modified situation-operator concept. Proc. 9th IFAC, IFIP, IFORS,IEA Symposium Analysis, Design, and Evaluation of Human-Machine Systems, Atlanta, Georgia, USA, September 7-9, 2004. [PDF]

Söffker, D.: Understanding MMI from a system-theoretic view - Part II: Concepts for supervision of Human and Machine. Proc. 9th IFAC, IFIP, IFORS,IEA Symposium Analysis, Design, and Evaluation of Human-Machine Systems, Atlanta, Georgia, USA, September 7-9, 2004. [PDF]

Wolters, K.; Söffker, D.: Improving systems availability by combining reliability and control engineering techniques. Proc. 2nd European Workshop on Structural Health Monitoring, Munich, July 7-9, 2004, pp. 711-720.

Ahle, E.; Söffker, D.: Learning from Interaction with the Environment using a Situation-Operator Calculus with Application to Mobile Robots. Proc. Int. Conf. on System, Man and Cybernetics, The Hague, Netherlands, Vol. 4, October 10-13, 2004, pp. 3839-3844.

Kashi, K.; Söffker, D.: Model-Based Estimation of a Force and Displacement of a Hydraulic Cylinder. Proc. 7th International Symposium on Advanced Vehicle Control KIVI-NIRIA, Arnheim, Netherlands, 2004. [PDF]

Ahle, E.; Söffker, D.: Modeling the Decision Process of the Lane-Change Maneuver Using a Situation-Operator Model. Proc. IEEE Conf. on Cybernetics and Intelligent Systems (CIS), Singapore, Dec. 1-3, 2004, pp. 1106-1110.

Kashi, K.; Wolters, K.; Söffker, D.: An Integrated Concept for Failure Avoidance System Design. IAR Annual Meeting 2004, Karlsruhe, Nov 17-18, 2004, pp. 15-19.

Söffker, D.: Mensch-Maschine-Systeme: Entwicklung eines Beschreibungsansatzes für wissensgeleitete Interaktionen. Vortrag Institut für Mess- und Automatisierungstechnik, Universität Kassel, Prof. Dr. G. Johannsen, 27. Januar 2004.

Gunnarsson, S.; Norrlöf, M.; Rahic, E.; Özbek, M.: Iterative Learning Control of a Flexible Robot Arm using Accelerometers. in Proc. of the 2004 IEEE International Conference on Control Applications, Vol. 2, Taipei, Taiwan, Sept. 2-4, 2004, pp. 1012-1016.