Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 伊藤 弘,Access Control System for Office Buildings,The Journal of the Institute of Electrical Installation Engineers of Japan,09100350,The Institute of Electrical Installation Engineers of Japan,2007,27,2,108-111,https://cir.nii.ac.jp/crid/1390282680721525760,https://doi.org/10.14936/ieiej.27.108