Semi-quantitative models in hybrid control systems. - Photis G. Skiadas; Nick T. Koussoulas (ICECS, 1996)

Motion Planning for Drift-Free Nonholonomic Systems under a Discrete Levels Control Constraint. - Photis G. Skiadas; Nick T. Koussoulas (J. Intell. Robotic Syst., 2001)

Symbolic computation for mobile robot path planning. - Nick T. Koussoulas; Photis G. Skiadas (J. Symb. Comput., 2004)