【题名】:A new chi-square approximation to the distribution of non-negative definite quadratic forms in non-central normal variables
【作者】:Huan Liua, Yongqiang Tangb, , , Hao Helen Zhang
【杂志名全称】:Computational Statistics & Data Analysis
【年,卷(期),起止页码】:Volume 53, Issue 4, 15 February 2009, Pages 853–856
【全文链接】:http://www.sciencedirect.com/sci ... i/S0167947308005653
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