Petr Jirků
Universitz of Economics, Prague, Czech Republic, jirku@vse.cz
Ivan Bruha
McMaster University, Hamilton, Ontario, Canada, bruha@mcmaster.ca
Alberto Voltolini
Universita di Palermo, piazza Ignazio Florio 24, 90 139 Palermo, Italy
Jindřich Zelený
Soukenická 29, Praha 1, 110 00, Czech Republic
Jan Hric
Mathematical Faculty, Charles University, Malostranské náměstí 25, Praha 1, 118
00, Czech Republic, hric@kki.mff.cuni.cz
Peter F. Strawson
Magdalene College, Oxford OX 1 4AU, GB