1. A review of hierarchical classification;Gordon;J. Roy. Statist. Soc. Ser. A,1987
2. Probabilistic approximation of metric spaces and its algorithmic applications;Bartal,1996
3. On approximating arbitrary metrics by tree metrics;Bartal,1998
4. A Ramsey-type theorem for metric spaces and its applications for metrical task systems and related problems;Bartal,2001
5. On metric Ramsey-type phenomena;Bartal,2003