1. Forward completeness, unboundedness, observability, and their Lyapunov characterization;Angeli;SCL,1999
2. Discrete time approximated linearization of SISO systems under output feedback;Barbot;IEEE T.A.C.,1999
3. State linearization up to Input/Output injection of discrete-time controlled nonlinear systems;Besancon;SCL,1998
4. On Output Transformations for State Linearization up to output injection;Besançon;IEEE TAC,1999
5. Canonical form observer design for non-linear time-variable systems;Bestle;IJC,1983