| Nanzan University, Nagoya, Japan |
| University of Arizona, Tucson, USA
|
| Massachusetts Institute of Technology, Boston, USA |
| Central University of Venezuela, Caracas |
| Merida Technical University, Venezuela |
| Hungarian Academy of Sciences, Research Institute for Computer Technique and Automation |
| Budapest University of Economics, Hungary |
| Gödöllő University of Agricultural Sciences |
| Janus Pannonius University, Pécs, Hungary |