This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
W. Schulz
BAT Cigaretten-Fabriken GmbH Hamburg, Forschung und Entwicklung, Germany
F. Seehofer
BAT Cigaretten-Fabriken GmbH Hamburg, Forschung und Entwicklung, Germany