The following publications are possibly variants of this publication:
- Complementing unary nondeterministic automataFilippo Mera, Giovanni Pighizzini. TCS, 330(2):349-360, 2005. [doi]
- On the Size of Unary Probabilistic and Nondeterministic AutomataMaria Paola Bianchi, Carlo Mereghetti, Beatrice Palano, Giovanni Pighizzini. FUIN, 112(2-3):119-135, 2011. [doi]
- Probabilistic vs. Nondeterministic Unary AutomataMaria Paola Bianchi, Carlo Mereghetti, Beatrice Palano, Giovanni Pighizzini. ncma 2010: 33-44
- Pairs of Complementary Unary Languages with "Balanced" Nondeterministic AutomataViliam Geffert, Giovanni Pighizzini. algorithmica, 63(3):571-587, 2012. [doi]
- Pairs of Complementary Unary Languages with Balanced Nondeterministic AutomataViliam Geffert, Giovanni Pighizzini. latin 2010: 196-207 [doi]
- Converting two-way nondeterministic unary automata into simpler automataViliam Geffert, Carlo Mereghetti, Giovanni Pighizzini. TCS, 295:189-203, 2003. [doi]
- Converting Two-Way Nondeterministic Unary Automata into Simpler AutomataViliam Geffert, Carlo Mereghetti, Giovanni Pighizzini. mfcs 2001: 398-407 [doi]