Iran, Tehran
Universidade Federal Fluminense Niterói - RJ - Brazil
Mojio Inc. Vancouver, Canada
University of California, Davis Davis, CA
Center of Gravity, Electric and Magnetic Studies Golden, CO
Tartu, Estonia
Brisbane, Australia
University of Stavanger KE E-394
Zūrich
Potsdam
University of Electronic Science and technology of China
Guangzhou University Guangzhou, Guangdong, China
Switzerland
Confœderatio Helvetica
Universidade Federal do Pará Belém
Peking University peking university
Seattle, WA
University of California Davis