Walter Carnielli
Centre of Logic, University of Campinas
Brazil
Janusz Czelakowski
Institute of Mathematics, University of Opole
Poland
Wieslaw Dziobiak
Department of Mathematics, University of Puerto Rico
U. S. A.
Josep Maria Font
Institute of Mathematics, University of Barcelona
Spain
Tomasz Kowalski
Department of Logic, Jagiellonian University
Poland
Hiroakira Ono
Japan Advanced Institute of Science and Technology, Hokuriku
Japan
Alasdair Urquhart
Department of Phlosophy, University of Toronto
Canada
Frank Wolter
Department of Computer Science, University of Liverpool
UK
Heinrich Wansing
Department of Philosophy II, Ruhr University Bochum
Germany
Ross Willard
Department of Pure Mathematics, University of Waterloo
Canada
Piotr Wojtylak
WMFiCH, University of Silesia
Poland
Andrzej Wronski
Department of Logic, Jagiellonian University
Poland