Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kawashima Kohnosuke,NTT Telecommunication Networks Laboratories : Research on Teletraffic and Telecommunication Quality,Bulletin of the Japan Society for Industrial and Applied Mathematics,2432-1982,The Japan Society for Industrial and Applied Mathematics,1994,4,4,365-367,https://cir.nii.ac.jp/crid/1390282680742304512,https://doi.org/10.11540/bjsiam.4.4_365