Rudolph, Heinz P. <br/><br/>
Competition and performance in the Polish second pillar / 
Heinz Rudolph, Roberto Rocha. 
 - Washington :  The World Bank,  2007. 
 - V, [1], 53 s. :  il. ;  26 cm. 
 - World Bank Working Paper,  no. 107  1726-5878 ; .
 - World Bank Working Paper  no. 107 .
<br/><br/>Bibliogr. s. 51-53. 
<br/><br/><label>ISBN: </label>0821371193 9780821371190 9780821371206