Co-authorship of Joint utterances in Japanese Yasuko Obana author Michael Haugh author 2015-02 text journal article Dialogue & Discourse continuing University of Bielefeld Bielefeld, Germany periodical academic journal obana-haugh-2015-co 10.5087/dad.2015.101 https://aclanthology.org/2015.dnd-6.1/ 2015-02 6 1 25