TY  - BOOK
AU  - Prasad Paras N
AU  -  Willims David
TI  - Introduction to nonlinear optical efforts in molecules and polymers
U1  - C51, N1 
PY  - 1991///
CY  - New York    
PB  -  John Wiley       
KW  -  Polymers
KW  - Optical materials
ER  -