Text and Data Mining valid from 2018-12-18
Received: 31 July 2017
Accepted: 26 November 2018
First Online: 18 December 2018
Compliance with ethical standards
: On behalf of all authors, the corresponding author states that there is no conflict of interest. However, we pronounce that we are members of industrial R&D centers. The R&D results published in the present paper refer to an industrial procedure practiced in our factories. Eventual practical consequences drawn thereof can have impact on public safety. We are aware of the entrepreneur responsibility resulting thereof, but we disallow any personal liability. We assure that every fact and result of the present paper has been compiled in all conscience, but we also remind that accidental errors or misinterpretation can never be entirely excluded.