Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TSUZUKI Izumi,Commercial tools for patent analysis(Patent information: Analysis and effective utilization),The Journal of Information Science and Technology Association,09133801,"Information Science and Technology Association, Japan",2010,60,8,326-332,https://cir.nii.ac.jp/crid/1390001204204279296,https://doi.org/10.18919/jkg.60.8_326