Gruenewald, C., Mecklinger, A., & Friederici, A. D. (2000). Segregating semantic from phonological codes in working memory: A dual task interference approach. In E. Schröger, A. Mecklinger, & A. D. Friederici (Eds.), Working on working memory (pp. 61-80). Leipzig: Leipziger Universitätsverlag.