Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tsunomura Satoru,Characteristics of geomagnetic sudden commencement observed in middle and low latitudes,"Earth, Planets and Space",13438832,"Society of Geomagnetism and Earth, Planetary and Space Sciences, The Seismological Society of Japan, The Volcanological Society of Japan , The Geodetic Society of Japan , The Japanese Society for Planetary Sciences",1998,50,9,755-772,https://cir.nii.ac.jp/crid/1390001206510271872,https://doi.org/10.1186/bf03352168