W. Schultz, “Subjective Neuronal Coding of Reward: Temporal Value Discounting and Risk,” Eur J Nsci 31 (2010): 2124; S. Kobayashi and W. Schultz, “Influence of Reward Delays on Responses of Dopamine Neurons,” J Nsci 28 (2008): 7837; S. Kim et al., “Prefrontal Coding of Temporally Discounted Values During Intertemporal Choice,” Neuron 59 (2008): 161; M. Roesch and C. Olson, “Neuronal Activity in Orbitofrontal Cortex Reflects the Value of Time,” J Neurophysiology 94 (2005): 2457; M. Bermudez and W. Schultz, “Timing in Reward and Decision Processes,” Philosophical Trans of the Royal Soc of London B 369 (2014): 20120468; B. Figner et al., “Lateral Prefrontal Cortex and Self-Control in Intertemporal Choice,” Nat Nsci 13 (2010): 538; K. Jimura et al., “Impulsivity and Self-Control During Intertemporal Decision Making linkced to the Neural Dynamics of Reward Value Representation,” J Nsci 33 (2013): 344; S. McClure et al., “Time Discounting for Primary Rewards,” J Nsci 27, 5796.