1. H.-J. Bandelt, Four point characterization of the dissimilarity functions obtained from indexed closed weak hierarchies, Mathematisches Semminar, Universität Hamburg, Germany, 1992.
2. Weak hierarchies associated with similarity measures—an additive clustering technique;Bandelt;Bull. Math. Biol.,1989
3. NP-hard approximation problems in overlapping clustering;Barthélemy;J. Classification,2001
4. The k-weak hierarchical representation: an extension of the indexed closed weak-hierarchies;Bertrand;Discrete Appl. Math.,2003
5. From Asprejan hierarchies and Bandelt-dress weak-hierarchies to quasi-hierarchies;Diatta,1994