Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kobayashi Takahiro and Takahashi Tai,Nursing Staff Supplement Scheduling Using LP,Journal of Japanese Association for Health Care Administrators,18837905,Japanese Association for Health Care Administrators,2013,7,1,43-53,https://cir.nii.ac.jp/crid/1390282680487762176,https://doi.org/10.11202/jaha.7.43