| Sun, 02 Nov 2014 18:21:45 +0100 | wenzelm | modernized header uniformly as section; | file | diff | annotate |
| Fri, 05 Apr 2013 18:31:35 +0200 | nipkow | tuned document | file | diff | annotate |
| Fri, 10 Aug 2012 17:17:05 +0200 | nipkow | Improved complete lattice formalisation - no more index set. | file | diff | annotate | base |