1. Greedoids;Korte,1991
2. Combinatorial relaxation algorithm for the maximum degree of subdeterminants: Computing Smith-McMillan form at infinity and structural indices in Kronecker form;Murota,1995
3. K. Murota, Finding optimal minors of valuated bimatroids, (in preparation).
4. Eine Kennzeichnung gut optimierbarer Funktionenklassen;Hadasch,1992
5. Valuated matroids: A new look at the greedy algorithm;Dress;Appl. Math. Lett.,1990