Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) PARK Taekeun and UEMATSU Koyo,THE OPTIMAL PLANNED REPLACEMENT MODEL WITH MINIMAL AND PERFECT REPAIR,Mathematica japonicae,00255513,,2000-11-01,52,3,453-462,https://cir.nii.ac.jp/crid/1570291224755152128,