A. Radulescu-Banu. (2006)cite http://arxiv.org/abs/math/0610009arxiv:math/0610009Comment: Ams-latex, 158 pages. Corrections to Thm. 6.4.1 and Def. 7.2.5.
I. Hasuo, K. Cho, T. Kataoka, und B. Jacobs. Electronic Notes in Theoretical Computer Science, 298 (0):
197 - 214(2013)Proceedings of the Twenty-ninth Conference on the Mathematical Foundations of Programming Semantics, \MFPS\ \XXIX\.
C. Barwick, und C. Schommer-Pries. (2011)cite http://arxiv.org/abs/1112.0040arxiv:1112.0040Comment: 46 pages, 2 figures. Corrections of a formatting error and addition of clearer acknowledgements.