http://psych.colorado.edu/~oReilly/papers/StoccoLebiereOReillyEtAl12.pdf
http://psych.colorado.edu/~oreilly/papers/oreillyhazyherdip.pdf
http://psych.colorado.edu/~oreilly/papers/OReilly10.pdf
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2862817/pdf/nihms182137.pdf
http://www.intsci.ac.cn/research/sci31491.pdf