Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NAKAZAWA Masae and IKEDA Mitsuru,Research-Concern Maps: The Role of Ontology as a Criterion for Qualitative Analysis of Concept Maps,Japan Journal of Educational Technology,13498290,Japan Society for Educational Technology,2011,34,4,343-351,https://cir.nii.ac.jp/crid/1390282680206656384,https://doi.org/10.15077/jjet.kj00007142883