Durstewitz D, Seamans JK, Sejnowski TJ. (2000). Dopamine-mediated stabilization of delay-period activity in a network model of prefrontal cortex. Journal of neurophysiology. 83 [PubMed]
Hasselmo ME. (2005). A model of prefrontal cortical mechanisms for goal-directed behavior. Journal of cognitive neuroscience. 17 [PubMed]