1. Primes is in P;Agrawal;Annals of Mathematics,2004
2. The complexity of theorem proving procedures;Cook,1971
3. The decision problem for exponential diophantine equations;Davis;Annals of Mathematics,1961
4. Equivalence problems for circuits over sets of natural numbers;Glaßer,2007
5. Reducibility among combinatorial problems;Karp,1972