About this article
Published Online: Jun 14, 2023
Page range: 291 - 291
DOI: https://doi.org/10.2478/wd-2023-0090
© 2023 Wolfram F. Richter, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Wolfram F. Richter
Technische Universität Dortmund,