1. Department of Environmental Engineering and Antipollution Control, Technological Educational Institute of Western Macedonia (TEI), Kila 50 100 Kozani, Greece
2. Department of System Analysis and Control, Institute of Computer Science and Technology, Peter the Great St. Petersburg Polytechnic University, 29 Politekhnicheskaya ul., St. Petersburg 195251, Russia
3. Ioffe Institute, 26 Politekhnicheskaya ul., St. Petersburg 194021, Russia