| Thu, 15 Oct 1998 11:35:07 +0200 | paulson | specifications as sets of programs | file | diff | annotate |
| Wed, 07 Oct 1998 10:32:00 +0200 | paulson | tidying and renaming | file | diff | annotate |
| Thu, 13 Aug 1998 18:06:40 +0200 | paulson | Constrains, Stable, Invariant...more of the substitution axiom, but Union | file | diff | annotate |