1. Clustering in free recall as a function of certain methodological variations;Cofer;Journal of Experimental Psychology,1966
2. Some-or-none characteristics of coding behavior;Cohen;Journal of Verbal Learning and Verbal Behavior,1966
3. Cultural norms for verbal items in 43 categories;Cohen,1957
4. Number of categories and category information in free recall;Dallett;Journal of Experimental Psychology,1964
5. Cued partial recall;Dong,1969