1.
Theorem Proving in High Order Logics 12th International Conference, Tphols'99, Nice, France,...
by Bertot, Yves, Dowek, Gilles...
ISBN: 9783540664635
List Price: $82.95
2.
Theorem Proving in Higher Order Logics
by Bertot, Yves, Dowek, Gilles...
ISBN: 9783662183410
List Price: $24.99