Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Hamamatsu Yoshio and Arai Hiroyuki,Approximate Analysis of Congestion of Traffic in AGV System.,IEEJ Transactions on Industry Applications,09136339,The Institute of Electrical Engineers of Japan,1996,116,10,1041-1048,https://cir.nii.ac.jp/crid/1390001204656700672,https://doi.org/10.1541/ieejias.116.1041