著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) GANG YU and HONGYING LU,FEEDBACK CONTROL VARIABLES HAVE NO INFLUENCE ON THE PERMANENCE OF A DISCRETE COMPETITIVE SYSTEM WITH TIME DELAYS,"ICIC express letters. Part B, Applications : an international journal of research and surveys",21852766,Kumamoto : ICIC International,2012-02,3,1,119-125,https://cir.nii.ac.jp/crid/1522262180053965440,