Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Akira Mita and Masayoshi Ashihara,Robust identification of human activities in buildings using multiple sensor system,SPIE Proceedings,0277-786X,SPIE,2009-03-26,7292,,72922X,https://cir.nii.ac.jp/crid/1872835442862843776,https://doi.org/10.1117/12.815648