3A. Berle, G. Means, The Modem Corporation and Private Property, Harcour, Brace and Wodd, New York: Revised Edition, 1932, (58), pp.81-112.
4M. C. Jensen and W. H. Meckling, Theory of the Firm: Managerial Behavior, Agency Costs and Ownership Structure, Journal of Financial Economics, 1976, 3(4), p. 308.