Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KIRIYAMA Tsutomu and HASEGAWA Masayoshi and KAWASHIMA Jun and TAMAOKI Kenichi and YOSHIDA Ikuo and TSUJIKAWA Takayuki,"Search for future Patent Information Retrieval System from two points of view ""Indexing & Retrieval""",The Journal of Information Science and Technology Association,09133801,"Information Science and Technology Association, Japan",2003,53,3,152-158,https://cir.nii.ac.jp/crid/1390282679210950016,https://doi.org/10.18919/jkg.53.3_152