@article{oai:nagoya.repo.nii.ac.jp:00019902,
 author = {SAO, Kazuo},
 journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University},
 month = {Mar},
 pages = {35--37},
 title = {CORRELATION BETWEEN SOLAR ACTIVITY AND THE ATMOSPHERIC POTENTIAL GRADIENT AT THE EARTH'S SURFACE IN THE POLAR REGIONS.},
 volume = {14},
 year = {1967}
}