Clustering thescience citation index® using co-citations - I. A comparison of methods. - Henry G. Small; E. Sweeney (Scientometrics, 1985)

Embedding intelligent decision making within complex dynamic environments. - Gregory M. P. O'Hare; Michael J. O'Grady; Richard Tynan; Conor Muldoon; Harry R. Kolar; Antonio G. Ruzzelli; Dermot Diamond; E. Sweeney (Artif. Intell. Rev., 2007)