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"Pyramids and weak hierarchies in the ordinal model for clustering."
Patrice Bertrand, Melvin F. Janowitz (2002)
- Patrice Bertrand, Melvin F. Janowitz:
Pyramids and weak hierarchies in the ordinal model for clustering. Discret. Appl. Math. 122(1-3): 55-81 (2002)
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