Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Miyamoto Yuichiro,Introduction to Mathematical Optimization (3) : Lagrangian Relaxation and Subgradient Method(Tutorial),Bulletin of the Japan Society for Industrial and Applied Mathematics,09172270,The Japan Society for Industrial and Applied Mathematics,2013,23,3,129-134,https://cir.nii.ac.jp/crid/1390282680743229568,https://doi.org/10.11540/bjsiam.23.3_129