3WEBER, ALFRED. Theory of Location of Industries[M].Chicago:University of Chicago Press, 1929. 126-134.
4BALASSA, BELA. The Theory of Economic Integration[M]. London: George Allen & Unwin, 1973. 191-197.
5BATOR, F.M. The Anatomy of market failure[J]. Quarterly Journal of Economics. August 1958. 351-379.
6RICHARDSON, HARRY W. Regional Growth Theory[M]. Lodon : Macmillan, 1973. 175- 196.
7HOOVER, E.M. An Introduction to Regional Economics[M]. New York: McGraw-Hill, 1975.94-136.
8KEMP, M. C. The Efficiency of Competition as an Allocator of Resources. I. External economies in Production[J]. Canadian Journal of Economics and Political Science. february 1995.30-42.
9MEADE, J.E. External Economies and Diseconomies in a Competitive Situation[J]. Economic Journal. March 1952. 54-67.
10SCITOVSKY, T. Two concepts of external economies, in Journal of Political Economy[J]. Vol. LXII, No. 2, April, 1954. 143-151.