TY  - BOOK
AU  - Wooldridge Jeffrey M
TI  - Econometric analysis of cross section and panel data
SN  - 0-262-23219-7
U1  - 330.015195 
PY  - 2002///
CY  - Cambridge
PB  - MIT Press
KW  - Asymptotic theory
KW  - Econometrics
ER  -