Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tanaka Ikumi and Kosugi Naotaka,Quality Improvement Initiative to Visualize and Reform a Large Scale Application Maintenance Service Delivery(Project Quality and Customer Satisfaction),Journal of the Society of Project Management,1345031X,The Society of Project Management,2014,16,5,35-39,https://cir.nii.ac.jp/crid/1390001206112473216,https://doi.org/10.14914/spmj.16.5_35