| |
| 1984 | ||
|---|---|---|
| 2 | EE | M. L. Gardner: Hypergraphs and Whitney's theorem on edge-isomorphisms of graphs. Discrete Mathematics 51(1): 1-9 (1984) |
| 1980 | ||
| 1 | EE | M. L. Gardner: Forbidden configurations in intersection graphs of r-graphs. Discrete Mathematics 31(1): 85-88 (1980) |