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) A. Serdar Tasan and Mitsuo Gen,A genetic algorithm based approach to vehicle routing problem with simultaneous pick-up and deliveries,Computers & Industrial Engineering,0360-8352,Elsevier BV,2012-04,62,3,755-761,https://cir.nii.ac.jp/crid/1363388844512505344,https://doi.org/10.1016/j.cie.2011.11.025