Tohoku University:
https://www.tohoku.ac.jp/en/press/tuning_a_terahertz_wave_filter.html
https://www.eng.tohoku.ac.jp/english/news/detail-,-id,2808.html
AlphaGalileo:
https://www.alphagalileo.org/en-gb/Item-Display/ItemId/243607?returnurl=https://www.alphagalileo.org/en-gb/Item-Display/ItemId/243607
Asia Research News:
https://www.asiaresearchnews.com/content/tuning-terahertz-wave-filter
EurekAlert:
https://www.eurekalert.org/news-releases/1037199