| |
| 1998 | ||
|---|---|---|
| 4 | EE | Cristian Lenart, Nigel Ray: Hopf algebras of set systems. Discrete Mathematics 180(1-3): 255-280 (1998) |
| 1997 | ||
| 3 | EE | Cristian Lenart, Nigel Ray: Chromatic polynomials of partition systems. Discrete Mathematics 167-168: 419-444 (1997) |
| 1994 | ||
| 2 | EE | Nigel Ray, William Schmitt: Ultimate chromatic polynomials. Discrete Mathematics 125(1-3): 329-341 (1994) |
| 1992 | ||
| 1 | EE | Nigel Ray, Colin Wright: Umbral interpolation and the addition/contraction tree for graphs. Discrete Mathematics 103(1): 67-74 (1992) |
| 1 | Cristian Lenart | [3] [4] |
| 2 | William Schmitt | [2] |
| 3 | Colin Wright | [1] |