Keijo Ruohonen On Circular Words and (omega* + omega)-Powers of Words. [Citation Graph (0, 0)][DBLP] Elektronische Informationsverarbeitung und Kybernetik, 1977, v:13, n:1/2, pp:3-12 [Journal]
Keijo Ruohonen The Inclusion Problem for DOI Languages. [Citation Graph (0, 0)][DBLP] Elektronische Informationsverarbeitung und Kybernetik, 1979, v:15, n:11, pp:535-548 [Journal]
Keijo Ruohonen Reversible Machines and Post's Correspondence Problem for Biprefix Morphisms. [Citation Graph (0, 0)][DBLP] Elektronische Informationsverarbeitung und Kybernetik, 1985, v:21, n:12, pp:579-595 [Journal]
Keijo Ruohonen Undecidability of Event Detection for ODEs. [Citation Graph (0, 0)][DBLP] Elektronische Informationsverarbeitung und Kybernetik, 1993, v:29, n:2, pp:101-113 [Journal]
Keijo Ruohonen Solving Equivalence of Recurrent Sequences in Groups by Polynomial Manipulation. [Citation Graph (0, 0)][DBLP] Fundam. Inform., 1999, v:38, n:1-2, pp:135-148 [Journal]
Keijo Ruohonen Developmental Systems with Interaction and Fragmentation [Citation Graph (0, 0)][DBLP] Information and Control, 1975, v:28, n:2, pp:91-112 [Journal]
Keijo Ruohonen On the Decidability of the OL-DOL Equivalence Problem [Citation Graph (0, 0)][DBLP] Information and Control, 1979, v:40, n:3, pp:301-318 [Journal]
Keijo Ruohonen Three Results of Comparison Between L Languages with and without Interaction. [Citation Graph (0, 0)][DBLP] Inf. Process. Lett., 1975, v:4, n:1, pp:7-10 [Journal]
Keijo Ruohonen On Some Decidability Problems for HD0L Systems with Nonsingular Parikh Matrices. [Citation Graph (0, 0)][DBLP] Theor. Comput. Sci., 1979, v:9, n:, pp:377-384 [Journal]
Keijo Ruohonen On Equality of Multiplicity Sets of Regular Languages. [Citation Graph (0, 0)][DBLP] Theor. Comput. Sci., 1985, v:36, n:, pp:113-117 [Journal]