Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ioannis E. Livieris and Konstantina Drakopoulou and Vassilis T. Tampakas and Tassos A. Mikropoulos and Panagiotis Pintelas,Predicting Secondary School Students' Performance Utilizing a Semi-supervised Learning Approach,Journal of Educational Computing Research,0735-6331,SAGE Publications,2018-01-18,57,2,448-470,https://cir.nii.ac.jp/crid/1360579816307103488,https://doi.org/10.1177/0735633117752614