1. Graphs and Hypergraphs;Berge,1976
2. Latin Squares and their Applications;Dénes,1974
3. The square of every two-connected graph is hamiltonian;Fleischner;J. Combin. Theory,1974
4. On a group sequencing problem of Ringel;Friedlander;Graph Theory and Computing,1978
5. Reorienting regular n-gons;Gallian;Aequationes Math.,1980