1. Universals of lexical simplification;Blum-Kulka,1983
2. Vocabulary;Carter,1987
3. Vocabulary elaboration in teachers' speech to L2 learners;Chaudron;Studies in Second Language Acquisition,1982
4. Foreigner talk in the classroom — An aid to learning?;Chaudron,1983
5. Second Language classrooms;Chaudron,1988