About this article
Published Online: Jul 11, 2022
Page range: I - II
DOI: https://doi.org/10.23770/rt1871
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© 2022 Martin Rothgangel et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License.
Rothgangel, Martin
Frederking, Volker