I hope these two papers will help you.

http://link.springer.com/article/10.1007%2Fs10310-013-0403-4

http://jrcd.ca/include/getdoc.php?id=945&article=272&mode=pdf

Thank you so much

Social capital is the embodiment of the flow of capital through the societal structures and the key processes within the social fabric. Hence when you connect developmental perspective with social capital formation, it should be analyzed within the combined spectrum of socio-economic dynamics in a particular space.

I think that social capital, if measured properly and correctly, can encompass the very special option of social, economic, administrative and cultural envoriment of a region. Therefore it can be a mean to understand the diverse directions of regional development

There is a potential role of social networks in enhancing regional innovation. High level of integration of different groups of actors within a region is a significant factor of gathering diverse information, and therefore affects regional capacity for innovation. The potential for regional innovation increases with the number of ties between different areas, indicating the key role of bridging social capital, which enables the exploitation of resources in different areas. This interpretation of social capital is moving away from the idea of close integration within the group, as members of the group can be connected by common economic or other interests, not only by common values and habits.

Hi Panos Ioannidis!! 

Is interesting to see that the regions that have faced the worst crisis periods but also have revealed that better levels of innovation and skills are those that have a more robust economy location (density of firms in the same sector). The link between these companies in the field of employment, innovation, cooperation, among others, promotes a dynamic that is much more difficult to create in other territories. In Portugal, for example, the regions where the footwear industry dominates worked before  only for large multinationals. Today gained autonomy and compete with the most famous companies.

Please take a look:

http://www.tandfonline.com/doi/abs/10.1080/09654310601134854#.VEOXp4vF9Gghtt

http://www.portugueseshoes.pt/

Good morning Marija and Jorge! Thank you for your comments. I strongly believe that social capital has a profound role to play in regional development process. Not only the kind of ties among local actors impacts significantly the adding value, but also their substance as well. So, the charming option of social capital is its endogenous option that determines and simultaneously is determined by regional economic circuit.

I think that a very useful contribution at this regard is the the book of Emanuele Ferragina (2012) "Social Capital in Europe. A comparative Analysis" Edward Elgar Publishing 

http://www.e-elgar.co.uk/bookentry_main.lasso?id=14724

Thank you very much for your significant contribution!!