1. The recovery of trees from measures of dissimilarity;Buneman,1972
2. On rigid circuit graphs;Dirac,1974
3. Incidence matrices and internal graphs;Fulkerson;Pacific J. Math.,1965
4. Über die Ausflosung von Graphen in vollständrge Teilgraphen;Hajnal;Ann. Univ. Sci. Budapest. Eotvos, Sect. Math.,1958