TY  - BOOK
AU  - Wooldridge, Jeffrey M.,
TI  - Introductory econometrics: a modern approach 
SN  - 8131503224
PY  - 2007///
CY  - New Delhi
PB  - Thomson Learning
KW  - econometrics
N1  - Includes bibliographical references (p. 854-858) and index
ER  -