Published Online: Dec 31, 2019
Page range: 1 - 4
DOI: https://doi.org/10.2478/dcse-2019-0012
© 2019 Berise Heasly et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Berise Heasly
Johannes Lindner
Dzintra Iliško
Ilga Salīte