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1 Muller, E, "What we should know about knowledge intensive business services" 31 (31): 64-72, 2009
2 Barras, R, "Towards a theory of innovation in services" 15 (15): 161-173, 1986
3 de Jong, J. P. J, "The fruit flies of innovations: a taxonomy of innovative small firms" 35 (35): 213-229, 2006
4 Pateli, A. G, "Technology innovation-induced business model change : A contingency approach" 18 (18): 167-183, 2005
5 Vangaverbeke, W. P. M, "Technology Capability Building through Networking Strategies within High-tech Industries" Academy of Management 2002
6 Sirili, G, "Technological innovation in services and manufacturing : results from Italian surveys" 27 (27): 881-899, 1998
7 Timmer, M. P, "Technological development and rates of return to investment in a catching-up economy : the case of South Korea" 14 (14): 405-425, 2003
8 Baines, T, "State of the art in product-service system" 221 : 1543-1551, 2007
9 Banker, R. D, "Some models for estimating technical and scale inefficiencies in data envelopment analysis" 30 (30): 1078-1092, 1984
10 Evangelista, R, "Sectoral patterns of technical change in services" 9 (9): 183-221, 2000
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27 Tether, B. S, "Do services innovate (differently)? Insights from the European innobarometer survey" 12 (12): 153-184, 2005
28 Lee, H, "Comparative evaluation of performance of national R&D programs with heterogeneous objectives: A DEA approach" ELSEVIER SCIENCE BV 196 (196): 847-855, 2009
29 Howells, T. F, "Annual Industry Accounts : Advanced Estimates for 2006, Survey of Current Busines" US Department of Commerce, Bureau of Economic Analysis 12-25, 2007