@article{Csendes_Fülöp_2005, title={Preface}, volume={17}, url={https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/3661}, number={2}, journal={Acta Cybernetica}, author={Csendes, Tibor and Fülöp, Zoltán}, year={2005}, month={Jan.}, pages={183} }