Media type: E-Article Title: Recognizing the Repeatable Configurations of Time-Reversible Generalized Langton’s Ant Is PSPACE-Hard Contributor: Tsukiji, Tatsuie; Hagiwara, Takeo Published: MDPI AG, 2011 Published in: Algorithms, 4 (2011) 1, Seite 1-15 Language: English DOI: 10.3390/a4010001 ISSN: 1999-4893 Keywords: Computational Mathematics ; Computational Theory and Mathematics ; Numerical Analysis ; Theoretical Computer Science Origination: Footnote: Access State: Open Access