1. Minimally two-connected graphs;Dirac;J. Reine Angew. Math.,1967
2. On spanning subgraphs of a connected bridgeless graph and their application to DT-graphs;Fleischner;J. Combinatorial Theory Ser. B,1974
3. H. Fleischner and H. V. Kronk, Hamiltonsche Linien im Quadrat brückenloser Graphen mit Artikulationen (to appear in Monatsh. Math.)
4. Graph Theory;Harary,1969
5. Problem No. 48, “Theory of Graphs”;Nash-Williams,1968