Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ogawa Tadahiko and Hosokawa Keisuke and Nishitani Nozomu and Sato Natsuo and Yamagishi Hisao and Yukimatu Akira Sessai,Characteristics of polar mesosphere summer echoes observed with oblique incidence HF radars at Syowa Station,Advances in polar upper atmosphere research,13451065,National Institute of Polar Research,2003-09,17,,13-29,https://cir.nii.ac.jp/crid/1572261551713236224,