Missing Data
Borgatti, S.P., Carley, K., and Krackhardt, D. 2006. Robustness of Centrality Measures under Conditions of Imperfect Data. Social Networks 28: 124–136. [pdf]
Gueorgi Kossinets, Effects of missing data in social networks, Social Networks Volume 28, Issue 3, , July 2006, Pages 247-268.[^pdf]
Ward, M.D., Hoff, P.D., and Lofdahl, C.L. (2003) "Identifying International Networks: Latent Spaces and Imputation," in Dynamic Social Network Modeling and Analysis: Workshop Summary and Papers , 345-359, Ronald Breiger, Kathleen Carley, and Philippa Pattison, eds., Washington, D.C., The National Academies Press. [pdf]