1. Institute of Information and Computational Technologies, P.O. Box 050010 Almaty, Kazakhstan
2. Department of Computer Science, Al-Farabi Kazakh National University, P.O. Box 050040 Almaty, Kazakhstan
3. Department of Marketing, Jyväskylä University School of Business and Economics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
4. Faculty of Oriental Studies, Al-Farabi Kazakh National University, P.O. Box 050040 Almaty, Kazakhstan