1. General Topology;Willard,1970
2. Hyper-minimizing minimized deterministic finite state automata;Badr;RAIRO Theor. Inform. Appl.,2009
3. On minimising automata with errors;Gawrychowski,2011
4. From equivalence to almost-equivalence, and beyond—minimizing automata with errors (extended abstract);Holzer,2012
5. On the state complexity of combined operations;Yu,2006