1. R. Agarwala, V. Bafna, M. Farach, B. Narayanan, M. Paterson, and M. Thorup. On the approximability of numerical taxonomy: fitting distances by tree metrics. Proceedings of the 7th Annual ACM-SIAM Symposium on Discrete Algorithms, 1996.
2. D. J. Aldous, Probability distributions on cladograms, in: Discrete Random Structures, eds. D. J. Aldous and R. Permantle, Springer-Verlag, IMA Vol. in Mathematics and its Applications. Vol. 76, 1–18, 1995.
3. J. K. M. Brown, Probabilities of evolutionary trees, Syst. Biol. 43(1), 78–91, (1994).
4. P. Buneman, The recovery of trees from measures of dissimilarity, in Mathematics in the Archaeological and Historical Sciences, F. R. Hodson, D. G. Kendall, P. Tautu, eds.; Edinburgh University Press, Edinburgh, 1971, pp. 387–395.
5. J. Cohen and M. Farach, Numerical Taxonomy on Data: Experimental Results. SODA '97 and RECOMB '97.