著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Hoang Nam Tran and Katya Marinova,Students’ Experience Two Years Into the Pandemic at a Bulgarian University,PCE Official Conference Proceedings,2758-0962,The International Academic Forum(IAFOR),2022-08-24,,,,https://cir.nii.ac.jp/crid/1360580232403260800,https://doi.org/10.22492/issn.2758-0962.2022.12