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ORCIDAndries P. J. van der Walt
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2010 – 2019
- 2013
[j11]Sigrid Ewert
, Andries P. J. van der Walt:
Necessary conditions for subclasses of random context languages. Theor. Comput. Sci. 475: 66-72 (2013)
2000 – 2009
- 2008
- [j10]Frank Drewes, Christine du Toit, Sigrid Ewert, Brink van der Merwe, Andries P. J. van der Walt:
Bag Context Tree Grammars. Fundam. Informaticae 86(4): 459-480 (2008) - 2006
- [c3]Frank Drewes, Christine du Toit, Sigrid Ewert, Brink van der Merwe, Andries P. J. van der Walt:
Bag Context Tree Grammars. Developments in Language Theory 2006: 226-237 - 2005
- [j9]Frank Drewes, Christine du Toit, Sigrid Ewert, Johanna Högberg, Brink van der Merwe, Andries P. J. van der Walt:
Random context tree grammars and tree transducers. South Afr. Comput. J. 34: 11-25 (2005) - 2003
- [j8]Andries P. J. van der Walt, Sigrid Ewert:
A property of random context picture grammars. Theor. Comput. Sci. 301(1-3): 313-320 (2003) - [c2]Sigrid Ewert, Andries P. J. van der Walt:
The Power and Limitations of Random Context. Grammars and Automata for String Processing 2003: 33-44 - 2002
- [j7]Sigrid Ewert, Andries P. J. van der Walt:
A pumping lemma for random permitting context languages. Theor. Comput. Sci. 270(1-2): 959-967 (2002) - 2000
- [j6]Andries P. J. van der Walt, Sigrid Ewert:
A shrinking lemma for random forbidding context languages. Theor. Comput. Sci. 237(1-2): 149-158 (2000)
1990 – 1999
- 1999
- [j5]Sigrid Ewert, Andries P. J. van der Walt:
Generating Pictures Using Random Permitting Context. Int. J. Pattern Recognit. Artif. Intell. 13(3): 339-355 (1999) - [j4]Sigrid Ewert, Andries P. J. van der Walt:
A Hierarchy Result for Random Forbidding Context Picture Grammars. Int. J. Pattern Recognit. Artif. Intell. 13(7): 997-1008 (1999) - [j3]Sigrid Ewert, Andries P. J. van der Walt:
Shrink Indecomposable Fractals. J. Univers. Comput. Sci. 5(9): 521-531 (1999) - 1998
- [j2]Sigrid Ewert, Andries P. J. van der Walt:
Generating Pictures Using Random Forbidding Context. Int. J. Pattern Recognit. Artif. Intell. 12(7): 939-950 (1998)
1970 – 1979
- 1976
- [j1]Andries P. J. van der Walt:
Locally Linear Families of Languages. Inf. Control. 32(1): 27-32 (1976) - 1971
- [c1]Andries P. J. van der Walt:
Random Context Languages. IFIP Congress (1) 1971: 66-68
Coauthor Index
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