Download Article
Download the full article as a PDF file.
Download the full article as a PDF file.
© 2018 Imanta Ozola-Zālīte, Anda Vīksna, Jeļena Ivanova, Agnese Ūdre, Aldis Puķītis, published by Latvian Academy of Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.