1. Zum Hilbertschen Aufbau der reellen Zahlen
2. A. Beckmann and A. Weiermann. Characterizing the elementary recursive functions by a fragment of Gödel's T.Archive for Mathematical Logic, 1996. to appear.
3. A new recursion-theoretic characterization of the polytime functions
4. Ranking Primitive Recursions: The Low Grzegorczyk Classes Revisited
5. Guillaume Bonfante, Reinhard Kahle, Jean-Yves Marion, and Isabel Oitavem. Recursion schemata for nck. In Michael Kaminski and Simone Martini, editors,22nd International Workshop, CSL 2008, 17th Annual Conference of the EACSL, Bertinoro, Italy, September 16-19, 2008. Proceedings, volume 5213, pages 49-63, Italie Bertinoro, 2008. Springer.