Keuken, Max C., Christa Muller-Axt, and Robert Langner et al., “Brain Networks of Perceptual Decision-Making: An fMRI ALE Meta-Analysis”, Frontiers in Human Neuroscience 8, no. 445 (June 2014), n.p., http://www.ncbi.nlm.nih.gov/pmc/articles/PMC 4063192.
