Binary polyhedral groups and Euclidean diagrams
Happel, Dieter ; Preiser, Udo ; Ringel, Claus MichaelIn: Manuscripta mathematica, Vol. 31 Issue 1-3, page 317-329Hereditary artinian rings of finite representation type
Dowbor, P. ; Ringel, Claus Michael ; Simson, Daniel ; Dlab, Vlastimil (Ed.) ; Gabriel, Peter (Ed.)In: Representation Theory II. Proceedings of the Second International Conference on Representations of Algebras, Ottawa, Carleton University, August 13-25, 1979: No. 2, Vol. 832, page 232-241Perfect elements in the free modular lattices
Dlab, Vlastimil ; Ringel, Claus MichaelIn: Mathematische Annalen, Vol. 247 Issue 2, page 95-100The preprojective algebra of a modulated graph
Dlab, Vlastimil ; Ringel, Claus Michael ; Dlab, Vlastimil (Ed.) ; Gabriel, Peter (Ed.)In: Representation Theory II. Proceedings of the Second International Conference on Representations of Algebras, Ottawa, Carleton University, August 13-25, 1979: No. 2, Vol. 832, page 216-231The rational invariants of the tame quivers
Ringel, Claus MichaelIn: Inventiones mathematicae, Vol. 58 Issue 3, page 217-239Reflection functors for hereditary algebras
Ringel, Claus MichaelIn: Journal of the London Mathematical Society : Ser. 2, Vol. 21 Issue 3, page 465-479A remark on normal forms of matrices
Dlab, Vlastimil ; Ringel, Claus MichaelIn: Linear algebra and its applications, Vol. 30, page 109-114Report on the Brauer-Thrall conjectures: Rojter's theorem and the theorem of Nazarova and Rojter (on algorithms for solving vectorspace problems. I)
Ringel, Claus Michael ; Dlab, Vlastimil (Ed.) ; Gabriel, Peter (Ed.)In: Representation Theory I. Proceedings of the Workshop on the Present Trends in Representation Theory, Ottawa, Carleton University, August 13-18, 1979: No. 1, Vol. 831, page 104-136Socle determined categories of representations of artinian hereditary tensor algebras
Roggenkamp, Klaus W. ; Ringel, Claus MichaelIn: Journal of algebra, Vol. 64 Issue 1, page 249-269Tame algebras: (on algorithms for solving vector space problems, II)
Ringel, Claus Michael ; Dlab, Vlastimil (Ed.) ; Gabriel, Peter (Ed.)In: Representation Theory I: Proceedings of the Workshop on the Present Trends in Representation Theory, Ottawa, Carleton University, August 13-18, 1979: No. 1, Vol. 831, page 137-287Vinberg's characterization of Dynkin diagrams using subadditive functions with application to DTr-periodic modules
Happel, Dieter ; Preiser, Udo ; Ringel, Claus Michael ; Dlab, Vlastimil (Ed.) ; Gabriel, Peter (Ed.)In: Representation Theory II: Proceedings of the Second International Conference on Representations of Algebras, Ottawa, Carleton University, August 13-25, 1979: No. 2, Vol. 832, page 280-294