1. Department of Physical Chemistry, University of Veszprém, H-8201 Veszprém, P.O. Box 158, Hungary
2. Department of Zoology and Center of Neuroscience, Brigham Young University, Provo Utah 84602
3. Department of Chemistry and Biochemistry, Brigham Young University, Provo Utah 84602
4. Department for the Modeling of Physico-Chemical Properties, MCS University, 20031 Lublin, Poland