Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) IGAMI Masatsura and SAKA Ayaka,Observation of the evolution of science via the Science Map : Methodology and application,Journal of Information Processing and Management,00217298,Japan Science and Technology Agency,2009,52,5,255-266,https://cir.nii.ac.jp/crid/1390282680485409152,https://doi.org/10.1241/johokanri.52.255