DOI: https://doi.org/10.2478/jee-2014-0060 | Journal eISSN: 1339-309X (formerly 1335-3632) | Journal ISSN: 1335-3632
Language: English
Page range: 371 - 375
Submitted on: Dec 5, 2013
Published on: Jan 31, 2015
Published by: Slovak University of Technology in Bratislava
In partnership with: Paradigm Publishing Services
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© 2015 V. Andonova Anna, L. Hinov Nikolay, published by Slovak University of Technology in Bratislava
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.