There are hundreds of papers available on the Web dealing with various aspects of network graph analysis, as well as multiple books available in PDF versions. This list provides some of the resources I have found most useful while preparing for and writing this book:
Barabási, A. Linked: The New Science of Networks. 2014.
Bearman, P., Moody, J., Stovel, K. Chains Of Affection: The Structure of Adolescent Romantic and Sexual Networks. American Journal of Sociology. 2004. 44-91. Retrieved April 19, 2014.
Easley, D., Kleinberg, J. Networks, Crowds, and Markets: Reasoning About a Highly Connected World. Cambridge University Press. 2010.
Kourtellis, N., Alahakoon, T., Simha, R., Iamnitchi, A., Tripathi, R. Identifying high betweenness centrality nodes in large social networks: Social Network Analysis and Mining. 899-914. Retrieved November 2, 2014.
Lattanzi, S., Sivakumar, D. Affiliation networks. 2009.
Newman, M. The Structure and Function of Complex Networks, SIAM Review. 2003. 167-167. Retrieved March 27, 2014.
Steen, M. Graph Theory and Complex Networks: An Introduction. 2010.
Tang, J., Musolesi, M., Mascolo, C., Latora, V. Temporal distance metrics for social network analysis. 2009. Retrieved March 21, 2014.
Wimmer, A., Lewis, K. Beyond and below racial homophily: ERG models of a friendship network documented on Facebook. American Journal of Sociology. 2010. 583-642. Retrieved June 22, 2014.