| |
| 1991 | ||
|---|---|---|
| 2 | EE | Hanfried Lenz, Gerhard Ringel: A brief review on Egmont Köhler's mathematical work. Discrete Mathematics 97(1-3): 3-16 (1991) |
| 1987 | ||
| 1 | EE | Dieter Jungnickel, Hanfried Lenz: Minimal linear spaces. J. Comb. Theory, Ser. A 44(2): 229-240 (1987) |
| 1 | Dieter Jungnickel | [1] |
| 2 | Gerhard Ringel | [2] |