Book 6.4 Faculty of Natural Science and EducationBook 6.4 · Education - Research and Innovations FRI-ONLINE-1-ERI-04 Testing of Mathematical Knowledge in Distance Education Environment Cite Cite this paper× Citation styleAPA 7IEEEChicago Author–DateHarvardBibTeXRIS DownloadCopy Emiliya Velikova, Ralitsa Vasileva-Ivanova