@ARTICLE{Heyman1986, author = "Richard D. Heyman", doi = "10.1080/01638538609544631", keywords = "EMCA, Topic, Classroom", journal = "Discourse Processes", number = "1", pages = "37–55", title = "Formulating topic in the classroom", url = "http://www.tandfonline.com/doi/abs/10.1080/01638538609544631", volume = "9", year = "1986", }