@article{oai:nagoya.repo.nii.ac.jp:00019694,
 author = {岩井, 章 and 大津, 仁助 and 村田, 友司 and 加藤, 利郎 and IWAI, Akira and OUTSU, Jinsuke and MURATA, Tomoji and KATO, Toshio},
 issue = {1-2},
 journal = {空電研究所報告},
 month = {May},
 note = {The apparatus for measuring the whistling atmospherics have been prepared for the observation of the coming International Geophysical Year. Routine observations were opened from 1 June 1956. Simultaneous observations at Toyokawa (geomagnetic latitude 24°) and Wakkanai (geomagnetic latitude 34°) were made for one month beginning 13 July 1956. During this period, no whistlers were heard at Toyokawa ; on the other hand, long whistlers, short whistlers and whistler pairs were observed at Wakkanai. Details of this apparatus and results obtained are shown in this paper.},
 pages = {26--44},
 title = {ホイッスラー空電の研究},
 volume = {7},
 year = {1957}
}