1. Error and the very advanced learner;Lenon;IRAL,1991
2. The relationship of lexical error and their types to the quality of ESL composition: An empirical study;Llach;Porta Linguarum,2005
3. A critical review of the terminology and taxonomies used in the literature on lexical errors;Llach;Miscelanea: A Journal of English and American Studies,2005
4. Lexical errors in young EFL learners: How do they relate to proficiency measures?;Llach;Interlinguistica,2007
5. Lexical errors as writing quality predictors;Llach;Studia Linguistica,2007