1. Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
2. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of NAS of Ukraine, Naukowa str. 3b, 79060 Lviv & Department of Photonics, Lviv Polytechnic National University, Bandery str. 12, 79000 Lviv, Ukraine
3. Institute of Physics, University of Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Germany
4. Department of Chemistry, Swansea University−Singleton Park, Swansea SA2 8PP, U.K.