@article{oai:nipr.repo.nii.ac.jp:00004073,
 journal = {Proceedings of the NIPR Symposium on Upper Atmosphere Physics},
 month = {Nov},
 note = {S(会告など)},
 pages = {141--142},
 title = {Program of the Eleventh Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions},
 volume = {2},
 year = {1989}
}