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Dear Michele, 

Besides the work of Dr. Phelps, I would suggest the following that may provide you with 
further reflection on the topic: 
- Robins, G. and Kalish, Y. (2006), Psychological predispositions and network structure:
The relationship between individual predispositions,structural holes and network closure, 
Social Networks, 26, pp. 56-84.

- Ahuja, G. (2000). Collaboration Netyyorks,Structural Holes, and Innovation: A 
Longitudinal Study, Administrative Science Quarterly, 45, pp. 425-455. 

- Mische, A., White, H. (1998). Between Conversation and Situation: Public Switching 
Dynamics across Network Domains. Social Research, Vol. 65, No. 3,pp. 695-724.

- Long, J., Cunningham, F., Braithwaite, J. (2013). Bridges, brokers and boundary 
spanners in collaborative networks: a systematic review. BMC Health Services Research, 

Filipa M. Ribeiro 
PhD Candidate
Faculty of Psychology and Educational Sciences 
University of Porto 
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