Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ITODA Akiyoshi and TOYOTA Saori and YAMAMOTO Shoji and TSUMURA Norimichi,2-7 Analysis of Correlation between Concentration and Facial Expression on E-learning,PROCEEDINGS OF THE ITE WINTER ANNUAL CONVENTION,1343-4357,The Institute of Image Information and Television Engineers,2013,2013,0,2-7-1,https://cir.nii.ac.jp/crid/1390282679425719936,https://doi.org/10.11485/itewac.2013.0_2-7-1