2Weinreich, U. Languages in Contact: Findings and Problems, Linguistic Circle of New York, 1953.
3Ervin, S., & Osgood, C. Psycholinguistics: A survey of theory and research problems. In: C. Osgood & T. Seboek (Eds.). Psycholinguistics. Baltimore. MA: Waverly Press,1954 : 139 - 146.
4Kolers, P. A, Interlingual associations. Journal of verbal Learning and Verbal Behavior, 1963, 2 : 291 - 300.
5Potter, M. C., et al. Lexical and conceptual representation in beginning and proficient bilinguals. Journal of Verbal Learning and Verbal Behavior, 1984, 23 : 23 - 38.
6Kroll, J. F., et al. Lexical memory in novice bilinguals.The role of concepts in retrieving second language words.In: M. Grunenberg, et al (Eds.). Practical aspects of memory. London: John Wiley & Sons, 1988, 2:389-395.
7Chen, H- C. Lexical processing in a non- native language:effects of language proficiency and learning strategy.Memory and Cognition. 1990, 18 : 279 - 288.
8Kroll, J. F., et al. Concept mediation in bilingual translation. Paper presented at the meeting of the Psychonomic Society, New Orleans, LA, 1990 : 1 - 7.
9Kroll, J. F., & Stewart, E. Category interference in translation and picture naming: Evidence for asymmetric connections between bilingual memory representations.Journal of Memory and Language, 1994, 33:149 - 174.
10Francis, W. S. Cognitive integration of language and memory in bilinguals: semantic representation.Psychological Bulletin, 1999, 125 : 193 - 222.