1. Abusch, Dorit. 2005. Triggering from alternative sets and projection of pragmatic presupposition. Ms, Cornell University.
2. I think — an English modal particle
3. “Negative transportation” gibt es nicht;Bartsch;Linguistische Berichte,1973
4. The effect of usage on degrees of constituency: the reduction of don't in English
5. Negative polarity licensing, factivity, and the CP field;de Cuba;International Journal of Basque Linguistics and Philosophy,2007