Wilson, Robert, Yuji Takahashi, Geoffrey Schoenbaum, Yael Niv, Lee, Luxburg, Guyon, and Garnett. (2014) 2014. “Orbitofrontal Cortex As a Cognitive Map of Task Space”. Neuron 81 (2). Salt Lake City, Utah: Elsevier Inc.: 267–279. doi:10.1016/j.neuron.2013.11.005.
Ribas-Fernandes, José, Alec Solway, Carlos Diuk, Joseph McGuire, Andrew Barto, Yael Niv, and Matthew Botvinick. (2011) 2011. “A Neural Signature of Hierarchical Reinforcement Learning.”. Neuron 71 (2): 370–379. doi:10.1016/j.neuron.2011.05.042.