| Fri, 24 Jul 1998 13:19:38 +0200 | berghofe | Adapted to new datatype package. | file | diff | annotate |
| Thu, 26 Jun 1997 13:20:50 +0200 | nipkow | set_of_list -> set | file | diff | annotate |
| Fri, 17 Jan 1997 13:16:36 +0100 | nipkow | Modified some defs and shortened proofs. | file | diff | annotate |