Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 藤川 忠重,電子部品のPPM不良率とFIT故障率,The Journal of Reliability Engineering Association of Japan,0919-2697,Reliability Engineering Association of Japan,1999,21,1,66,https://cir.nii.ac.jp/crid/1390001204453059840,https://doi.org/10.11348/reajshinrai.21.1_66