1. On the slowly well orderedness of ε0;Arai;Math. Log. Quart.,2002
2. A uniform approach to fundamental sequences and hierarchies;Buchholz;Math. Log. Quart.,1994
3. L. Carlucci, G. Lee, A. Weiermann, Classifying the phase transition threshold for regressive Ramsey functions, Amer. J. Math. (submitted for publication) Preprint 2006
4. Theories of Computational Complexity;Calude,1988
5. Sharp thresholds for the phase transition between primitive recursive and Ackermannian Ramsey numbers;Kojman;J. Combin. Theory, Ser. A,2008