The following publications are possibly variants of this publication:
- Magic numbers for symmetric difference NFASLynette van Zijl. ijfcs, 16(5):1027-1038, 2005. [doi]
- Magic Numbers for Symmetric Difference NFAsLynette van Zijl. wia 2004: 333-334 [doi]
- Minimization of unary symmetric difference NFAsLynette van Zijl, Graham Muller, Jan Daciuk. saj, 34:69-75, 2005.
- Ambiguity of Unary Symmetric Difference NFAsBrink van der Merwe, Lynette van Zijl, Jaco Geldenhuys. ictac 2011: 256-266 [doi]
- Minimal DFA for Symmetric Difference NFABrink van der Merwe, Hellis Tamm, Lynette van Zijl. dcfs 2012: 307-318 [doi]
- Descriptional Complexity of Ambiguity in Symmetric Difference NFAsLynette van Zijl, Jaco Geldenhuys. jucs, 17(6):874-890, 2011. [doi]
- Ambiguity and structural ambiguity of symmetric difference NFAsA. B. van der Merwe, Lynette van Zijl, Jaco Geldenhuys. TCS, 537:97-104, 2014. [doi]