prio/Paper/Paper.thy
2012-02-01 urbanc more on intro
2012-02-01 urbanc slightly more on text
2012-02-01 zhang All comments added.
2012-01-30 urbanc spell check
2012-01-30 urbanc slight polishing
2012-01-30 urbanc more text
2012-01-30 urbanc added two paragraphs to the introduction
2012-01-29 zhang More explanations added by XY.
2012-01-27 urbanc changed abstract, intro and IsaMakefile
2012-01-27 zhang Newer version.
2012-01-24 urbanc initial version of the PIP formalisation
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