TY  - BOOK
AU  - Gelb Arthur
AU  - Velde W E V
TI  - Multiple-input describing functions and nonlinear system design
U1  - 629.8 
PY  - 1968///
CY  - London
PB  - McGraw-Hill
KW  - Automatic control engineering
KW  - Nonlinear system design
ER  -