Song P, Wang XJ. (2005). Angular path integration by moving "hill of activity": a spiking neuron model without recurrent excitation of the head-direction system. The Journal of neuroscience : the official journal of the Society for Neuroscience. 25 [PubMed]
Welday AC, Shlifer IG, Bloom ML, Zhang K, Blair HT. (2011). Cosine directional tuning of theta cell burst frequencies: evidence for spatial coding by oscillatory interference. The Journal of neuroscience : the official journal of the Society for Neuroscience. 31 [PubMed]