【作者(必填)】Edwin J. Elton, Martin J. Gruber, Sanjiv Das and Matthew Hlavka

【文题(必填)】Efficiency with Costly Information: A Reinterpretation of Evidence from Managed Portfolios

【年份(必填)】1993

【全文链接或数据库名称(选填)】http://rfs.oxfordjournals.org/content/6/1/1.short