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<referencetext xmlns="http://eprints.org/ep2/data/2.0">Batagelj, V.;  Mrvar, A. (1997). Pajek. Program package for large networks analysis. // XVII Sunbelt Social Networks Conference San Diego, February,13-16 http://vlado.fmf.uni-lj.si/pub/networks/pajek/sunbelt.97/pajek.htm (26-12-2007)
Beaver, D. D. (2004). Does collaborative research greater epistemic authority? // Scientometrics. 60:3 (August 2004) 399-408.
Börner, K., Chen, C.; Boyack, K. (2003). Visualizing Knowledge Domains. // Annual Review of Information Science &amp; Technology. (37)  179-355.
Braun, T.;Glänzel, W.; Schubert, A. (1985). Scientometrics indicators. Philadelphia: World Scientific, 1985. 
Camí, J. (2004). Dinámica de intercitación y cocitación entre las universidades españolas: análisis bibliométrico de los documentos citados producidos en las universidades y de los documentos citantes en el período 1994-2000, a partir de las bases de datos National Citation Report del ISI. Madrid: Dirección General de Universidades, 2004.
Chinchilla-Rodríguez, Z. (2006). La investigación científica española (1995-2002): una aproximación métrica. Granada: Universidad, 2006.
Cruz Castro, L.; Sanz Menéndez, L.; Romero, M. (2004). Convergencia y divergencia en las políticas de ciencia y tecnología de los gobiernos regionales.Madrid:CSIC,2004. http://www.iesam.csic.es/doctrab2/dt-0402.pdf
European Commission (2003). Third european report on science and technology indicators 2003: towards a knowledge-based economy. Luxembourg: Office for Official Publications of the European Communities, 2003.
Everett, M.G.; Borgatti, S.P. (1999). Peripheries of cohesive subsets. // Social Networks. 21:4 (October 2000) 397-407.
Freeman, L C. (2000). Visualizing Social Networks. // Journal of Social Structure. 1:1 (February 2000) 1-15.
Garfield, E. (1976). The science citation index and ISI´s Journal Citation Reports: their implication for journal editors. General Assembly of the European Association of Editors of Biological Periodicals, 3, 1976. París: European Associa-tion of Editors of Biological Periodicals, 1976.22
Gómez, I et al. (2005). Regionalization of science and technology data in Spain. // Research Evaluation. 14:2 (August 2005) 137-148.
Gómez, I. et al. (2007). Structure and research performance of spanish universities. Proceeedings of ISSI 2007: 11th International Conference of the International Society for Scientometrics and Informetrics. Madrid: CIN-DOC, 2007. 335-345.
Heffner, A.G. (1981). Funded research, multiple authorship, and sub-authorship collaboration in four disciplines. // Scientometrics. 3:1 (January 1981) 5-12.
Kamada T.;  Kawai S. (1989). An algorithm for drawing general undirected graphs. // Information Processing Letter. 31:1 (April 1989) 7-15.
Katz, J.S. (1994). Geographical proximity and scientific collaboration. // Scientometrics. 31:1 (Sep-tember 1994) 31-43. 
Kraut,R.E.; Galegher, J.; Egido, C. (1988). Relationships and task is scientific research collaboration. // Human-Computer interaction. 3:1 (1987-1988) 31:58.
Leydesdorff, L.; Vaughan, L. (2006). Co-occurrence matrices and their applications in Information Science: Extending ACA to the Web Environ-ment. // Journal of the American Society for In-formation Science &amp; Technology. 57:12 (October 2006) 1616-1628.
Laudel, G. (2002). What do we measure by co-authorships? // Research Evaluation.  11:1 (April 2002) 3-15.
Liang, L.; Zhu, L. (2002). Major factors affecting China´s inter-regional research collaboration: regional scientific productivity and geographical proximity. //  Scientometrics.  55:2 (August 2002) 287-316.
Melin, G; Persson (1996). Studying collaboration using co-authorships. // Scientometrics. 36:3 (October 1996) 363: 377.
Moya Anegón, F., et al. (2004). Análisis de la excelencia científica en la investigación universitaria española (1998-2002). Madrid: Dirección General de Universidades, 2004.
Moya Anegón F. et. al. (2005). Indicadores bibliométricos de la actividad científica española (1990-2004). Madrid: Fundación Española para la Ciencia y la Tecnología, 2005. 
Newman, M.E.J. (2001). The structure of scientific collaboration networks. // Proceedings of the National Academy of Sciences of the United States of America. 98:2 (January 2001) 404-409.
Okubo, Y.; Zitt, M. (2004). Searching for research integration across Europe: a closer look at international and inter-regional collaboration in France. // Science and Public Policy. 31:3 (June2004) 213-226.
Otte, E.;  Rousseau, R. (2002). Social network anaysis: a powerful strategy, also for the information Sciences. // Journal of Information Science. 28:6 (December 2002) 441:453.
Persson, O.; Glänzel, W.; Danell, R. (2004). Inflationary bibliometric values: the role of scientific collaboration and the need for relative indicators in evaluative studies. // Scientometrics. 60:3 (August 2004) 421-432.
Rovira Pato, Ll. (2006). Análisis de la actividad interdisciplinar en base a los documentos ISI de las universidades españolas: estudio de las aplicaciones para su óptima evaluación. Madrid: Dirección General de Universidades,  2006.
Sanz Menéndez, L. (1997). Estado, ciencia y tecnología en España: 1939-1997. Madrid: Alianza Universidad, 1997.
Smith, D.; Katz, JS. (2002). Collaborative approaches to research. HEFCE fundamental review of research policy and funding. A joint project with the Higher Education Policy Unit (HEPU), University of Leeds and the Science Policy Research Unit (SPRU) University of Sussex.
http://www.sussex.ac.uk/Users/sylvank/pubs/collc.pdf  (2008-05-14).
Vargas-Quesada, B.; Moya Anegón, F. (2007). Visualizing the structure of science. Berlin: Springer, 2007. 
Tichy, N. M.; Tushman, M. L.; Fombrun, Ch. (1979). Social network analysis for organization. // The Academy of Management Review. 4:4 (October 1979) 507-519.
Wagner, C. S.; Leydesdorff, L. (2005). Network, self-organization and the growth of international collaboration in science. // Research Policy. 34:10,  (December 2005) 1608-1618.
Zitt, M.; Bassecoulard, E.; Okubo, Y. (2000). Shadows of the past in international cooperation. Collaboration profiles of the top five producers of science. // Scientometrics. 47:3 (March 2000) 627-657.</referencetext>
