Baltagi, Badi H. <br/><br/>
Econometric analysis of panel data 
Badi H. Baltagi 
 - 2nd ed 
 - Chichester  John Wiley & Sons  2001 
 - 293 p.  24 cm 
<br/><br/><label>ISBN: </label>0471499374 
<br/><br/><label>Subjects--Index Terms: </label>Analisis economico Econometria