1 Eotvos Lorant University, Budapest, Hungary
2 University of Leipzig, Leipzig, Germany
3 University of Rome "La Sapienza", Rome, Italy
4 University of Aquila, L'Aquila, Italy
5 New Bulgarian University, Sofia, Bulgaria
6 University of California, San Diego, USA
7 National Yang Ming University, Taipei, Taiwan
8 National Hsinchu Teachers College, Hsinchu, Taiwan
9 Budapest University of Technology and Economics
10 University of Illinois, Urbana-Champaign, USA
11 National Tsing Hua University, Hsinchu, Taiwan
12 University of Minnesota, USA
13 Chung Yuan Christian Univeristy, Taipei, Taiwan
14 Washington University, St. Louis, USA
