Authors
Jānis Blahins
Atomic Physics and Spectroscopy Institute, University of Latvia, Latvia
Armans Bžiškjans
Atomic Physics and Spectroscopy Institute, University of Latvia, Latvia
Guntis Kalniņš
Latvia
© 2021 Jānis Blahins, Armans Bžiškjans, Guntis Kalniņš, published by Latvian Academy of Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.