About this article
Published Online: Sep 19, 2018
Page range: 51 - 51
DOI: https://doi.org/10.2478/cttr-2018-0006
Keywords
© 2018 Wolf-Dieter Heller et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Heller, Wolf-Dieter
Scherer, Gerhard