1.On upper bounds for the variance of functions of random variables T. Cacoullos and V. Papathanasiou

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Statistics & Probability Letters
Volume 3, Issue 4, July 1985, Pages 175-184
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V1D-47N62JS-1&_user=1021771&_coverDate=07%2F31%2F1985&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1299755933&_rerunOrigin=google&_acct=C000050170&_version=1&_urlVersion=0&_userid=1021771&md5=c4ac872cf073ea771dc0b31d221f803b
2.Lower variance bounds and a new proof of the central limit theorem
Journal of Multivariate Analysis, Volume 43, Issue 2, November 1992, Pages 173-184
T. Cacoullos, V. Papathanasiou
谢谢