Proof Development with ΩmegaJörg Siekmann,Christoph Benzmüller,Vladimir Brezhnev,Lassaad Cheikhrouhou,Armin Fiedler,Andreas Franke,Helmut Horacek,Michael Kohlhase,Andreas Meier,Erica Melis,Markus Moschner,Immanuel Normann,Martin Pollet,Volker Sorge,Carsten Ullrich,Claus-Peter Wirth,Jürgen ZimmerLecture Notes in Computer Science(2002)