@article{oai:nagoya.repo.nii.ac.jp:00020225,
 author = {Takagi, Masumi},
 journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University},
 month = {Mar},
 pages = {53--56},
 title = {ACTIVITY REPORT : Section 2. Sources of Atmospherics and Atmospheric Electricity},
 volume = {31},
 year = {1984}
}