1. Bailey, E.E., and A.F. Friedlaender. 1982. Market structure and multiproduct industries. Journal of Economic Literature 20(3): 1024–1048.
2. Baumol, W.J. 1977. On the proper cost tests for natural monopoly in a multiproduct industry. American Economic Review 67(5): 809–822.
3. Brown, R.S., D.W. Caves, and L.R. Christensen. 1979. Modelling the structure of cost and production for multiproduct firms. Southern Economic Journal 46(1): 256–273.
4. Christensen, L., D.W. Jorgenson, and L.J. Lau. 1973. Transcendental logarithmic production frontiers. Review of Economics and Statistics 55(1): 28–45.
5. Denny, M., and C. Pinto. 1978. An aggregate model with multi-product technologies. In Production economics: A dual approach to theory and applications, vol. 2, ed. M. Fuss and D. McFadden. Amsterdam: North-Holland.