Chapter 4: Spatial Politics, footnote 83, page 162 Ch4 fn. 83 p. 162 Tags: Pure Citation, Corporate and Business Organization Ripley, Railroads: Rates and Regulation, 108. Richard A. Posner, Natural Monopoly and Its Regulation, Stanford Law Review 21, no. 3 (Feb. 1969): 570. Joseph Schumpeter et al., "Railway Rate Making: A Discussion," American Economic Review 4 (March 1914): 81.