DOI: https://doi.org/10.1515/prolas-2015-0004 | Journal eISSN: 2255-890X (formerly 1407-009X) | Journal ISSN: 1407-009X
Language: English, Latvian
Page range: 38 - 44
Submitted on: Aug 2, 2014
Published on: Jul 14, 2015
Published by: Latvian Academy of Sciences
In partnership with: Paradigm Publishing Services
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© 2015 Ieva Rūrāne, Ieva Roze, published by Latvian Academy of Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.