Endomorphisms of words in a quiver
In: Journal of combinatorial theory, Series A, Jg. 1993, S. 216-245
The kernel of an irreducible map
In: Proceedings of the American Mathematical Society, Jg. 1994, S. 57-66
Maps between tree and band modules
In: Journal of algebra, Jg. 1991, S. 186-194
On the four terms in the middle theorem for almost split sequences
In: Archiv der Mathematik, Jg. 1994, S. 501-505
On the number of almost split sequences with indecomposable middle term
In: The bulletin of the London Mathematical Society, Jg. 1994, S. 422-426
Paul Lazarsfeld, der Begründer mathematisch exakter Sozialwissenschaften
In: Wechselwirkung, Jg. 1988, S. 39-43
