【题 名】： A labor income-based measure of the value of human capital: An application to the states of the United States
            【作 者】： C. B. Mulligan and X. Sala-i-Martin
            【期刊、会议、单位名称】：Japan and the World Economy
            【年, 卷(期), 起止页码】：Volume 9, Issue 2, May 1997, Pages 159-191
            【全文链接】http://www.sciencedirect.com/science?_ob=ArticleURL&;_udi=B6VF1-3SWYBWM-H&_user=10&_coverDate=05%2F31%2F1997&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1482536499&_rerunOrigin=scholar.google&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=30cd20f177042f82bbb14abc47c13c45&searchtype=a