Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sakai Masaaki and Tsumagari Koji,The Fourth Generation Project Management Methodology using [Theory Of Constraints],Proceedings (National Conferences of The Society of Project Management),,The Society of Project Management,2003,2003,0,26-26,https://cir.nii.ac.jp/crid/1390282680616912640,https://doi.org/10.14914/spm.2003.0.26.0