<P>标题：Coefficient Change in Input-Output Models: Theory and Applications <BR>作者：Michael Sonis a; Geoffrey J. D. Hewings <BR>期刊： Economic Systems Research, Volume 4, Issue 2 1992 , pages 143 - 158 <BR>链接：<A href="http://www.informaworld.com/smpp/content~content=a739144636~db=all">http://www.informaworld.com/smpp/content~content=a739144636~db=all</A></P>
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