Aydalot, P. (1965). Note sur les économies externes et quelques notions connexes. Revue Economique. November. Pp. 962-968.
2.
Beaujeu-Garnier, J. and Chabot, G. (1967). Urban Geography. New York, John Wiley and Sons. P. 162.
3.
Fuchs, V. (1965). The Growing Importance of the Service Industries . New York, National Bureau of Economic Research. Occasional Paper No. 96.
4.
-. ( 1962). Changes in the Location of Manufacturing in the United States since1929. New Haven, Yale University Press.
5.
Hansen, N.M. (1968). French Regional Planning. Bloomington. Ind., Indiana University Press. Ch. 5.
6.
-. ( 1969). Regional Development and the Rural Poor. Journal of Human Resources. Vol. 4. No. 2. Spring. Pp. 205-214.
7.
Hirschman, A.O. (1958). The Strategy of Economic Development. New Haven, Yale University Press.
8.
Hoover, E.M. (1967). Some Old and New Issues in Regional Development. Centre for Regional Economic Studies. Occasional Paper No. 5. University of Pittsburgh.
9.
Lasuén, J.R. (1969). On Growth Poles. UrbanStudies . Vol. 6.2. Pp. 137-161.
10.
Milhau, J. (1956). La théorie de la croissance et l'expansion régionale . Economie Appliquee. July-September 1956 .
11.
Myrdal, G. (1957.) Rich Lands and Poor. New York , Harper. Pp. 27-35.
12.
Olsen, E. (1965). Erhverslivets Lokalisering. Nationalokenomisk Tidsskrift. Nos. 1-2. Pp. 18-30.
13.
Perroux, F. (1955). Note sur la notion de pole de croissance. Economie Appliquée. Nos. 1-2.
14.
-. ( 1964). La Firme Motrice dans une region et la region motrice . In L'Economie du XXe siècle. Second edition. Paris, Presses Universitaires de France. 1964. Pp. 192-241.
15.
Pottier, P. (1963). Axes de communication et theorie de developpment . Revue Economique. January. Pp. 113-114.
16.
Spengler, J.J. (1967). Some Determinants of the Manpower Prospect 1966-1985 . In Siegal, I. H. (Ed.), Manpower Tomorrow: Prospects and Priorities. New York, Augustus M. Kelly. P. 91.
17.
Thompson, W.R. (1968). Internal and External Factors in the Development of Urban Economies in Perloff, H. S. and Wingo, L. (Eds.), Issues in Urban Economics. Baltimore, Johns Hopkins Press. P. 53.
18.
Zarka, C. (1958). Un example de pôle de croissance. L'industrie textile du Nord de la France. Revue Economique. January. Pp. 65-106.