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Artemov, Sergei
http://www.cs.gc.cuny.edu/%7Esartemov/
City University of New York Graduate Center, USA.
Beklemishev, Lev
http://www.phil.uu.nl/~lev/
Utrecht University, the Netherlands and Steklov Mathematical Institute, Russia.
Boolos, George
http://en.wikipedia.org/wiki/George_Boolos
Massachussets Institute of Technology, USA (Wikipedia article).
Dosen, Kosta
http://www.mi.sanu.ac.yu/~kosta/
University of Belgrade, Yugoslavia.
Guglielmi, Alessio
http://alessio.guglielmi.name/index.html
Technical University of Dresden, Germany.
Japaridze, Giorgi
http://www.csc.villanova.edu/~japaridz/
Villanova University, USA.
Muravitsky, Alexei
http://www.nsula.edu/scholars_college/FACULTY/FAC-Alexei.html
Scholars' College, USA.
Van Benthem, Johan
http://staff.science.uva.nl/~johan/
University of Amsterdam, the Netherlands and Stanford University, USA.
Verbrugge, Rineke
http://www.ai.rug.nl/~rineke/
University of Groningen, the Netherlands.
Zambella, Domenico
http://alpha01.dm.unito.it/personalpages/zambella/
University of Torino, Italy.