+@book{Hopcroft1979,
+ title={Introduction to automata theory, languages, and computation},
+ author={Hopcroft, John E},
+ year={1979},
+ publisher={Pearson Education India}
+}
+@article{Mihov1998,
+ author = {Mihov, Stoyan},
+ pages = {1--6},
+ year={1998},
+ title = {{Direct Building of Minimal Automaton for Given List 2 Formal
+ background and notations 3 Method description}}
+}
+@inproceedings{Daciuk1998,
+ title={Incremental construction of minimal acyclic finite state
+ automata and transducers},
+ author={Daciuk, Jan and Watson, Bruce W and Watson, Richard E},
+ booktitle={Proceedings of the International Workshop on Finite
+ State Methods in Natural Language Processing},
+ pages={48--56},
+ year={1998},
+ organization={Association for Computational Linguistics}
+}
+