1Browning & Singelman(1975), "The emergency of a service society", Springfield, Va. , United States: National Technical Information Service.
2Beyers, W. B. (1992), "Producer services", Progress in Human Geography 16(4) : 573-583.
3Coffey & Bailly(1991), "Producer services and flexible production", Growth and Change 22 (4):95 - 117.
4Harrington, J. W. (1995), "Producer services research in U.S. regional studies", The Professional Geographer 47 (1):87-96.
5Daniels, P. W. (1995), "Producer services research in the United Kingdom", The Professional Geographer 47(1):87 -96.
6Bailly, A. S. (1995), "Producer services research in Europe", The Professional Geographer 47 (1): 70- 73.
7Rowthorn b-Ramaswamy(1999), "Growth, trade and deindustrialisation", Staff Papers 46:18-41.
8Klodt, H. (2000), " Structural change towards services: The German experience", University of Birmingham IGS Dis. cussion Paper.
9Karaomerlioglu & Carlsson ( 1999 ), " Manufacturing in decline? A matter of definition", Economy Innovation, New Technology 8(3) : 175-196.
10Goe, P,. (2002), "Factors associated with the development of nonmetropolitan growth, nodes in producer services, 1980- 1990", Rural Sociology 67 (3) :416- 441.