@article{oai:tsukuba.repo.nii.ac.jp:00029757,
 journal = {年次研究報告, Annual report of division of physics, the University of Tsukuba},
 month = {Oct},
 pages = {83--90},
 title = {<研究活動> IV. 宇宙観測グループ},
 volume = {2012},
 year = {2013}
}