Identities in categories
In: Canadian mathematical bulletin / Bulletin Canadien de mathematiques, Jg. 15 H. 2, S. 297-299
Indecomposable representations of orders and Dynkin diagramm
In: Comptes rendus mathématiques de l'Académie des Sciences / Academy of Science, Ottawa, Jg. 1 H. 2, S. 91-94The indecomposable representations of the dihedral 2-groups
In: Mathematische Annalen, Jg. 214, S. 19-34Infinite dimensional representations of finite dimensional hereditary algebras
In: Symposia mathematica, Jg. 23, S. 321-412The intersection property of amalgamations
In: Journal of pure and applied algebra, Jg. 2 H. 4, S. 341-342