1990 | ||
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2 | EE | Oskar Goecke, Rainer Schrader: Minor characterization of undirected branching greedoids - a short proof. Discrete Mathematics 82(1): 93-99 (1990) |
1988 | ||
1 | EE | Oskar Goecke: A greedy algorithm for hereditary set systems and a generalization of the Rado-Edmonds characterization of matroids. Discrete Applied Mathematics 20(1): 39-49 (1988) |
1 | Rainer Schrader | [2] |