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Language: English
Page range: 94 - 99
Submitted on: Nov 6, 2013
Accepted on: Dec 27, 2013
Published on: Nov 30, 2016
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 2 times per year

© 2016 Lyubomir Ts. Beshev, Angel P. Marinov, Tihomir V. Andreev, Nachko I. Totzev, Valentin Ch. Velikov, Tsvetomir G. Georgiev, Angel S. Grigorov, Boris D. Tsankov, Borislav A. Ignatov, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.