1. Pattern recognition in History;Barnes;Mathematical Connections,1995
2. Barnes, G.R., Cerrito, P.B., Levi, I., 1995b. Modeling of the decision-making of groups. In: Proceedings of the Joint Statistical Meetings, Social Statistics, American Statistical Association, Orlando, FL, pp. 101–106.
3. Algebraic structure of the interaction semigroup as related to the homogeneity of network;Barnes;Journal of Mathematical Sociology,1996
4. Barnes, G.R., Cerrito, P.B., Levi, I., 1997. Alternate methods for generating interaction semigroups. In: Barnes, G.R., Cerrito, P.B. (Eds.), Proceedings of the Tennessee Topology Conference. World Scientific, Singapore, pp. 19–32.
5. A mathematical model for interpersonal relationships in social networks;Barnes;Journal of Social Networks,1998