The following is a list of resources that you can consider to get further knowledge:
- Barabási, A. L., & Albert, R. (1999). Emergence of scaling in random networks. Science, 286(5439).
- DeGroot, M. H. (1974). Reaching a consensus. Journal of the American Statistical Association, 69(345).
- Golub, B., & Jackson, M. O. (2010). Naive learning in social networks and the wisdom of crowds. American Economic Journal: Microeconomics, 2(1).
- Travers, J., & Milgram, S. (1967). The small world problem. Psychology Today, 1(1).
- Watts, D. J., & Strogatz, S. H. (1998). Collective dynamics of ‘small-world’ networks. Nature, 393(6684).