TY  - RPRT
TI  - Modeling piecewise-linear systems by topological techniques.
AU  - Happ, W. W.
AU  - Moody, D. E.
AU  - Robbins, E. R.
PY  - 1966
UR  - https://ntrs.nasa.gov/citations/19660054957
ID  - 19660054957
ER  -