Clark, K.: Civilisation, Harper & Row, New York, 1969.
2.
Volkan, V.D. and Corney, R.T.: Some considerations of satellite states and satellite dreamsBrit. J. Med. Psychol.41:283, 1968.
3.
Ozturk, O. and Volkan, V.D.The theory and practice of psychiatry in TurkeyAm. J. Psychother.25:240, 1971.
4.
Searles, H.F.The differentiation between concrete and metaphorical thinking in the recovering schizophrenic patient. In Collected Papers on Schizophrenia and Related Subjects , International Universities Press , New York, 1965.
5.
Abse, D.W.: Speech and Reason, University Press of Virginia , Charlottesville, Virginia, 1971 .