Affiliation: | 1. Department of Molecular Spectroscopy, Institute for Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Moscow Region (Russian Federation), Fax: (+7)?496‐751‐0886 http://www.single‐molecule.ru;2. Lehrstuhl Experimentalphysik IV http://www.ep4.phy.uni‐bayreuth.de;3. Bayreuther Institut für Makromolekülforschung, Universit?t Bayreuth, 95440 Bayreuth (Germany), Fax: (+49)?921‐55‐4002 |