Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Toshio Nakagawa,Optimal policy of continuous and discrete replacement with minimal repair at failure,Naval Research Logistics Quarterly,0028-1441,Wiley,1984-12-01,31,,543-550,https://cir.nii.ac.jp/crid/1871428068135389568,https://doi.org/10.1002/nav.3800310404