Zhang, Jing, Yan Zhu, Guanxia Zhan, Polina Fenik, Lori Panossian, Maxime M. Wang, Shayla Reid, et al. “Extended Wakefulness: Compromised Metabolics in and Degeneration of Locus Ceruleus Neurons.” Journal of Neuroscience 34, no. 12, 19 марта 2014 г.: 4418–4431.