1. An algorithm for constructing clusters from a distance matrix;Apresjan;Mashinnyi perevod: prikladnaja lingvistika,1966
2. Four Point Characterization of the Dissimilarity Functions Obtained from Indexed Closed Weak Hierarchies;Bandelt,1992
3. Weak hierarchies associated with similarity measures: an additive clustering technique;Bandelt;Bull. Math. Biol.,1989
4. Subdominant ultrametrics;Bayod;Proc. Amer. Math. Soc.,1990
5. Description mathématique des classifications;Benzécri;Rev. Stat. Appl.,1972