TY  - BOOK
AU  - Baltagi, Badi H. 
TI  - Panel data econometrics: : theoretical contributions and empirical applications 
T2  - Contributions to Economic analysis 
SN  - 0444521720
U1  - 330.015195 
PY  - 2006///
CY  - Amsterdam
PB  - Elsevier
ER  -