Saowapha Chaipitak และ Samruam Chongcharoen. (2016) A covariance matrix test for high-dimensional data. <i>Songklanakarin Journal of Science and Technology (SJST)</i>, <i>38</i>(5), 521-535.Saowapha Chaipitak และ Samruam Chongcharoen. "A covariance matrix test for high-dimensional data". Songklanakarin Journal of Science and Technology (SJST) 38 (2016):521-535.Saowapha Chaipitak และ Samruam Chongcharoen. A covariance matrix test for high-dimensional data. Research and Development Office, Prince of Songkla University:ม.ป.ท. 2016.