Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
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Overcoming service innovation bottlenecks using Web 2.0
The 5 references without a DOI — listed, not checked
no DOI — not checkedLee, P. C., & Su, H. N. (2010). Quantitative mapping of scientific research—The case of electrical conducting polymer nanocomposite. Technological Forecasting and Social Change, 78, 132–151.
no DOI — not checkedNewman, M. E. J., Strogatz, S. H., & Watts, D. J. (2001). Random graphs with arbitrary degree distributions and their applications. Physical Review E, 64(2), 026118 (17).
no DOI — not checkedVan Ark, B., Broersma, L.,& den Hertog, P. (2003). Services innovation, performance and policy: A review. Research Series, No. 6, Dutch Ministry of Economic Affairs, The Hague.
no DOI — not checkedWatts, D. J. (2000). Small worlds: The dynamics of networks between order and randomness. Princeton: Princeton University Press.
no DOI — not checkedWhite, H. D., & McCain, K. W. (1998). Visualizing a discipline: An author co-citation analysis of information science, 1972–1995. American Association for the Advancement of Science, 49(4), 327–355.
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