| Fri, 20 Feb 2009 19:07:31 +0100 | wenzelm | tuned; | file | diff | annotate |
| Fri, 20 Feb 2009 18:48:58 +0100 | wenzelm | improved section on "Hereditary Harrop Formulae"; | file | diff | annotate |
| Thu, 19 Feb 2009 21:19:49 +0100 | wenzelm | more on object-level rules; | file | diff | annotate |