Download the full article as a PDF file.
© 2018 Gaļina Zvaigzne, Daina Kārkliņa, Joerg-Thomas Moersel, Sasha Kuehn, Inta Krasnova, Dalija Segliņa, published by Latvian Academy of Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.