1. Bishop, Y.M.M., Fienberg, S.E., Holland, P.W., 1975. Discrete Multivariate Analysis: Theory and Practice. The MIT Press, Cambridge, MA.
2. Bock, H., 1996. Probability models and hypotheses testing in partitioning cluster analysis. In: Arabie, P., Hubert, L.J., De Soete, G. (Eds.), Clustering and Classification. World Scientific, Singapore.
3. Popularity as an affordance for friendship: the link between group and dyadic experience;Bukowski;Social Development,1996
4. Cairns, R.B., Gariépy, J.-L., Kindermann, T., 1989. Identifying social clusters in natural settings, unpublished manuscript. Social Development Laboratory, University of North Carolina at Chapel Hill.
5. The distribution of popular persons in a group;Capobianco;Social Networks,1983