John Baldwin,
University of Illinois at Chicago, USA
James
Cummings, Carnegie Mellon
University, USA
Mohammad Golshani, IPM, Iran
Dugald
Macpherson, University of
Leeds, UK
Shahram
Mohsenipour, IPM, Iran
Ralf
Schindler, University of
Munster, Germany
Slawomir Solecki, University
of Illinois at Urbana-Champaign, USA
Stevo
Todorcevic, University of
Toronto, Canada and CNRS, France