§4.2 "The Science of Memory", from: Kolak, Daniel; Hirstein,
William; Mandik, Peter; & Waskan, Jonathan (2006), Cognitive Science:
An Introduction to Mind and Brain (New York: Routledge): 126-136.
Baddeley, Alan D. (2001),
"Is Working Memory Still Working?",
American Psychologist 56: 849-864;
reprinted in European Psychologist
7(2) (June 2002): 85-97.