T. Aberra, S. Armfield, M. Behnia, and G. McBain. Flow Dynamics, volume 832 of Conference Proceedings, page 456--460. American Instiute of Physics, (2006)
A. Aho, J. Hopcroft, and J. Ullman. Addison-Wesley Series in Computer Science and Information Processing Addison-Wesley, Reading, Massachusetts, (1970)
A. Aho, J. Hopcroft, and J. Ullman. Addison-Wesley Series in Computer Science and Information Processing Addison-Wesley, Reading, Massachusetts, (1974)