1. Second language acquisition of Spanish null subjects;Al-Kasey,1998
2. Noun-phrase anaphora and focus: The informational load hypothesis.
3. Null vs. overt pronouns and the topic-focus articulation in Spanish;Alonso-Ovalle;Italian Journal of Linguistics,2002
4. Adult L2 Spanish development of syntactic and discourse subject properties in an instructional setting;Ballester;RAEL: Revista Electrónica de Lingüística Aplicada,2013