1. Institute
of Organic Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
2. Rutherford Appleton Laboratories, Chilton, Oxfordshire OX11 0QX, United Kingdom
3. Department Physics, University of Bristol, Tyndall Ave., Bristol BS8 1TL, United Kingdom
4. Center for Biological and
Materials Sciences, Sandia National Laboratories, Albuquerque, New Mexico 87185-1315, United States