Baumol, William J.; Fischer, Dietrich; Raa, Thijs ten - In: Bell Journal of Economics 10 (1979) 2, pp. 648-658
The price-iso return locus for a regulated multiproduct firm shows all price vectors giving the rate of return permitted by regulation. The locus for any two products is shown to have both negatively and positively sloping segments. A price vector on a positively sloped segment is socially...