1. Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville,
Florida 32611-7200, United States
2. Department of Physics, Montana State University, Bozeman, Montana 59717, United
States
3. Institute of Physical
Chemistry, Polish Academy of Sciences,
Warsaw, 01-224, Poland
4. National Institute of Chemical Physics and Biophysics, Tallinn, 12618,
Estonia