Pigeon and human performance in a multi-armed bandit task in response to changes in variable interval schedules
Learning & Behavior (2011) - Comment
pubmed: 21380732  doi: 10.3758/s13420-011-0025-7  issn: 1543-4494  issn: 1543-4508 

Deborah Racey, Michael E. Young, Dennis Garlick, Jennifer Ngoc-Minh Ngoc-Minh Pham, Aaron P. Blaisdell