Moody, James, Daniel A. McFarland and Skye Bender-DeMoll. 2005. "Dynamic Network Visualization: Methods for Meaning with Longitudinal Network Movies” American Journal of Sociology 110:1206-1241 (web version, with movies, here). AJS enhanced html and PDF (with VPN)
PajekConverter a basic utility (written in Java) for converting tab-delineated text files into a format readable by the network analysis and visualization software Pajek.