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) RAMAKRISHNAN S.,A negative acknowledgement with periodic polling protocol for multicast over LANs,"Proc. IEEE Infocom'87, March-April",,,1987,,,,https://cir.nii.ac.jp/crid/1573950399914500352,