The exemplar interleaving effect in inductive learning: moderation by the difficulty of category discriminations
Memory & Cognition (2013) - Comment
pubmed: 22886736  doi: 10.3758/s13421-012-0238-9  issn: 1532-5946  issn: 0090-502x 

Norehan Zulkiply, Jennifer S. Burt