Dear Paolo, thank you very much for the detailed explanation. That's exactly what I needed.
Regards, Markus -- Dipl.-Phys. Markus Meinert Thin Films and Physics of Nanostructures Department of Physics Bielefeld University Universit?tsstra?e 25 33615 Bielefeld Room D2-118 e-mail: meinert at physik.uni-bielefeld.de Phone: +49 521 106 2661
