Richard W. Kaye

Bertrand Russell

Paul C. Gilmore

Logic Colloquium '02 (2002 Münster, Germany), Logic Colloquium 0

Logic Colloquium (2003 Helsinki, Finland), Viggo Stoltenberg-Hansen

Logic Colloquium 0, Logic Colloquium '02 (2002 Münster, Germany)

Matthias Baaz

Vincent Van Oostrom

Viggo Stoltenberg-Hansen, Logic Colloquium (2003 Helsinki, Finland)

Rene Cori

Logic Colloquium

Matthias Baaz