Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NAGAMOCHI Hiroshi and SHIRAKI Takashi and IBARAKI Toshihide,"劣モジュラ, 正モジュラ集合関数の多重グラフによる増大法",IPSJ SIG Notes,09196072,Information Processing Society of Japan (IPSJ),1999-01-27,66,,41-48,https://cir.nii.ac.jp/crid/1573668926953559040,