@misc{oai:nipr.repo.nii.ac.jp:00014702,
 author = {P.K., Purohit and Roshni, Atulkar},
 month = {Dec},
 note = {第8回極域科学シンポジウム/個別セッション：[OS] 宙空圏
12月5日（火）国立極地研究所 1階交流アトリウム
The Eighth Symposium on Polar Science/Ordinary sessions: [OS] Space and upper-atmosphere sciences
Tue. 5 Dec./Entrance Hall (1st floor), National Institute of Polar Research},
 title = {Study of solar cycle variation and its impact on critical frequency of F2 layer},
 year = {2017}
}