<P>求文献:</P>
<P>Mussard, S., Peypoch, N., 2006. On multi-decomposition of the aggregate Luenberger productivity index. </P>
<P><STRONG>Applied Economics Letters</STRONG> 13, 113–116.</P>
<P>谢谢</P>
<P align=right><FONT color=#000066>[此贴子已经被sswcdbmz于2007-11-22 9:32:28编辑过]</FONT></P>