Low latitude aurorae on October 21, 1989. I

Hiroshi MIYAOKA, Takeo HIRASAWA, Kiyohumi YUMOTO, Yoshihito TANAKA
1990 Proceedings of the Japan Academy. Series B, Physical and biological sciences  
doi:10.2183/pjab.66.47 fatcat:twjdrzb2u5ffhautqubuh5nzm4