Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Katsuo Shinichi,All Variance Methods,The Journal of Japan Society for Health Care Management,1345-6903,Japan Society for Health Care Management,2004,5,3,425-430,https://cir.nii.ac.jp/crid/1390282679462077568,https://doi.org/10.11191/jhm2000.5.425