KOTONOHA: A Corpus Concordance System for Skewer-Searching NINJAL Corpora. - Teruaki Oka; Yuichi Ishimoto; Yutaka Yagi; Takenori Nakamura; Masayuki Asahara; Kikuo Maekawa; Toshinobu Ogiso; Hanae Koiso; Kumiko Sakoda; Nobuko Kibe (LREC, 2020)