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Strachey, J., Freud, A., Strachey, A., Tyson, A. & Richards, A. (1957) The Standard Edition of the Complete Psychological Works of Sigmund Freud, Volume XI (1910): Five Lectures on Psycho-Analysis, Leonardo da Vinci and Other Works. The Standard Edition of the Complete Psychological Works of Sigmund Freud 11:1-249