| Sun, 13 Sep 2015 22:56:52 +0200 | wenzelm | tuned proofs -- less legacy; | file | diff | annotate |
| Sun, 02 Nov 2014 17:58:35 +0100 | wenzelm | modernized header; | file | diff | annotate |
| Fri, 02 Aug 2013 12:17:55 +0200 | wenzelm | tuned proofs; | file | diff | annotate |