Talk:John Hopcroft

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Uses of automata throry

[edit] EN3 certificate

J.E Hopcroft and R.E. Tarjan, "Efficient planarity testing", J. Assoc. Comput. Math., 21 pp 549-568 (1974) and R.E. Tarjan is known to have EN2. pom 15:21, 29 October 2006 (UTC)