Wooldridge, Jeffrey M. <br/><br/>
Introductory econometrics: a modern approach/ 3 ed. 

 - 3rd ed. 
 -  South western Cengage Learning  2006 
 - xxii, 890 p. 
<br/><br/><label>ISBN: </label>978 81 315 0322 5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Econometrics