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Artemov, Sergei
http://www.cs.gc.cuny.edu/~sartemov/
City University of New York Graduate Center, USA.
Beklemishev, Lev
http://www.phil.uu.nl/~lev/
Utrecht University, Netherlands and Steklov Mathematical Institute, Russia.
Buss, Samuel
http://math.ucsd.edu/~sbuss/
University of California, San Diego, USA.
Guglielmi, Alessio
http://alessio.guglielmi.name/
Technical University of Dresden, Germany.
Japaridze, Giorgi
http://www.csc.villanova.edu/~japaridz/
Villanova University, USA.