1. Graphs and Hypergraphs;Berge,1973
2. Fuggetlen Köröket nem Tartalmazo gratokol;Lovász;Math. Lapok,1965
3. On k-minimally n-edge-connected graphs;Maurer;Discrete Math.,1978
4. Connexité et indices de recouvrement dans les graphes;Peroche,1982
5. On the cyclic connectivity of planar graphs;Plummer,1972