Individual Behaviors and Social Structure in the Development of Communication Networks of Self-Organizing Online Discussion Groups. - Robert J. Beck; William J. Fitzgerald 002; B. Pauksztat (CSCL, 2003)

Computing core/periphery structures and permutation tests for social relations data. - John P. Boyd 002; William J. Fitzgerald 002; Robert J. Beck (Soc. Networks, 2006)

Computing continuous core/periphery structures for social relations data with MINRES/SVD. - John P. Boyd 002; William J. Fitzgerald 002; Matthew C. Mahutga; David A. Smith (Soc. Networks, 2010)