Prof Isobe made a presentation on his research project “Investigation on past solar activities using historical documents from the Eest and West” at the JpGU-AUG joint meeting 2017. His presentation was picked up by the news site of American Geophysical Union, EOS Earth & Space Science News.
 
AGU news site
https://eos.org/articles/mining-ancient-texts-reveals-clues-to-space-weather-of-yore