Raisch, J. Systems and Control Theory, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;
Raisch, J. (2000). Discrete abstractions of continuous systems: an input/output point of view. Mathematical and Computer Modelling of Dynamical Systems, 6(1), 6-29. doi:10.1076/1387-3954(200003)6:1;1-Q;FT006.