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) Taiki KATSUMATA and Koji MATSUOKA,Results of the Japanese dedicated cetacean sighting surveys in the western North Pacific in 2019 and 2020,Technical reports of the Institute of Cetacean Research,24336084,Tokyo : Institute of Cetacean Research,2021-12,,5,16-32,https://cir.nii.ac.jp/crid/1520291856316413056,