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) M. Venkat Ratnam and G. Kishore Kumar and S. Eswaraiah,Morphology of tropical mesospheric echoes observed by VHF radar,"EPS : Earth, Planets and Space",13438832,Tokyo : Terra Scientific Pub. Co,2013,65,2,97-102,https://cir.nii.ac.jp/crid/1520291855420474368,