1. Combinatorial Theory;Aigner,1979
2. Complexity of finding embeddings in a k-tree;Arnborg;SIAM J. Algebraic Discrete Methods,1987
3. Trees and Proximity Representations;Barthélemy,1991
4. Treewidth: algorithmic techniques and results;Bodlaender,1997
5. The recovery of trees from measures of dissimilarity;Buneman,1971