1. Department of Chemistry, Saint Louis University, 3501 Laclede Ave., St. Louis, Missouri 63103, USA
2. Department of Physical Chemistry, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary
3. Department of Information Sciences, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-8610, Japan