TY  - BOOK
AU  - Lucas William F
AU  - Roberts Fred S
AU  - Thrall Robert M
TI  - Discrete and system models
SN  - 0-387-90724-6
U1  - 511.8 
PY  - 1983///
CY  - NY
PB  - Springer-Verlag
KW  - Mathematical models
ER  -