Arnon Ploymukda และ Pattrawut Chansangiam. (2018) Khatri-Rao sums for Hilbert space operators. <i>Songklanakarin Journal of Science and Technology</i>, <i>40</i>(3), 595.Arnon Ploymukda และ Pattrawut Chansangiam. "Khatri-Rao sums for Hilbert space operators". Songklanakarin Journal of Science and Technology 40 (2018):595.Arnon Ploymukda และ Pattrawut Chansangiam. Khatri-Rao sums for Hilbert space operators. Research and Development Office, Prince of Songkla University:ม.ป.ท. 2018.