The following three papers could be a good starting point:

Leyden, D., P., Link, A., N., & Siegel, D., S. (2014). A theoretical analysis of the role of social networks in entrepreneurship. Research Policy, Volume 43, Issue 7, 1157-1163. Link: http://www.sciencedirect.com/science/article/pii/S0048733314000729

Stuart, T., E., & Sorenson, O. (2005). Social networks and entrepreneurship. In Alvarez, S., A., Agarwal, R., & Sorenson, O. (eds.) Handbook of entrepreneurship research. USA: Springer. Link: http://link.springer.com/chapter/10.1007/0-387-23622-8_11?no-access=true#

Greve, A. & Salaff, J., W. (2003). Social networks and entrepreneurship. Entrepreneurship Theory and Practice, Volume 28, Issue 1,  1-22. Link: http://onlinelibrary.wiley.com/doi/10.1111/1540-8520.00029/abstract

Best wishes for your research.

Good choices ! 

I also particularly like these three surveys (relatively recent - and quoted in a lot of papers) :

H. Hoang and B. Antoncic (2003), « Network-based Research in Entrepreneurship. A Critical Review », Journal of Business Venturing, vol. 18, n°2, p. 165-187.

Jack, S. 2010. Approaches to studying networks: implications and outcomes. Journal of Business Venturing, 25(1): 120–137.

S. Slotte-Kock and N. Coviello (2010), « Entrepreneurship Research on Network Processes: A Review and Ways Forward », Entrepreneurship Theory & Practice, vol. 34, n°1, p. 31-57.

To complete the picture, it can be interesting to look at seminal works from

Howard  Aldrich and C. Zimmer (1986), « Entrepreneurship through social networks », in The art and science of entrepreneurship, D. L. Sexton et R. W. Smilor (eds.), Ballinger, Cambridge, MA, p. 3-23.,

Ronald S. Burt (1992), Structural Holes: The Social Structure of Competition, Harvard Business Press Cambridge, MA.or M. Granovetter (1973), « The Strength of Weak Ties », American Journal of Sociology, vol. 78, n°6, p.1360-1380. (not on entrepreneurship, but a path-breaking paper)

(I've also some papers on this but they are mainly in French)

Wishing that this will be helpful to you

Sincerely yours

Birley (1985) Social Net workl Theory

Bourdieu (1990) Social Capital Theory are directly supporting social networks of entrepreneurship

Good idea. I wouls suggest:

- to articulate social network and social capital :

Anderson, A. R., & Jack, S. L. 2002. The articulation of social

capital in entrepreneurial networks: A glue or lubricant?

Entrepreneurship and Regional Development, 14(3): 193–

210.

For social capital, three important references seem to be :

1-Bourdieu look at : Bourdieu Pierre, 1980. - «Le capital social : notes provisoires», - Actes de la recherche en

sciences sociales, 3, pp. 2-3.

— 1983/1986. - « The forms of capital », dans John G. Richardson, (ed) Handbook of theory

and research for the sociology of education, Westport, ст. : Greenwood Press, pp. 241-258.

2- Coleman (according to Lin Bourdieu and Coleman discover the notion independently from each other)

Coleman James S., 1986. - Individual interests and collective action, Cambridge, Cambridge University Press.

— 1988. - «Social capital in the creation of human capital», American journal of sociology, (94), pp. 95-121.

— 1990. Foundations of social theory, Cambridge, MA, Harvard University Press

3- Nan LIN (1995) Social resources and social action : a theory of social capital, London and New York, Cambridge University Press, 

Last,  to operationalize, look at

Nahapiet, J., & Ghoshal, S. 1998. Social capital, intellectual

capital, and the organizational advantage. Academy of

Management Review, 23: 242-266.

and for a rich survey

Social capital: Prospects for a new concept

PS Adler, SW Kwon - Academy of management review, 2002 - amr.aom.org

Sincerely yours

David Knoke. 2012. Economic networks. Polity Press. Is a good book that would describe the connection in pretty easy terms.

I think you will find the linkage is pretty straight-forward. How ideas are exchanged, supported and funded will impact how entrepreneurs thrive (or not) in an ecosystem.

As a practicing entrepreneur, specializing in social and organizational network analysis, who is celebrating 20 years in business this year, I have observed the following network "rules" bring good results. 

* strong ties are better than weak ties

* part of your network needs to be diverse, while another part needs to be homophilous

* structural holes are useful, but know when to close them

* connect on your similarities and benefit from your differences

* golden rule of networks is the same as the golden rule of real estate:

   - location, location, location!

 This is actual experience, not theory!