Authier, J.- ­Marc, and L. Haegeman. “An Intervention Account of the Distribution of Main Clause Phenomena: Evidence from Ellipsis”. IBERIA: An International Journal of Theoretical Linguistics, vol. 4, no. 1, Nov. 2014, pp. 61-91, https://revistascientificas.us.es/index.php/iberia/article/view/224.