TY  - SER
AU  - Carmona, V.
AU  - Freire, E.
AU  - Ponce, E.
AU  - torres, F.
TI  - on Simplifying and Classifying Piecewise -Linear Systems
KW  - Circuit Analysis
KW  - Nonlinear Osillators
KW  - Piecewise Linear Approximation
ER  -