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New knowledge Journal of science Jubilee edition is financed by the National Science Fund of the Republic of Bulgaria – contract № ДНП 05/52 от 22.12.2016 in the competition of Bulgarian scientific periodicals – 2016

The contents of this publication do not necessarily reflect the position or opinion of the National Science Fund of the Republic of Bulgaria. The opinions expressed are those of the author(s) only and should not be considered as representative of the National Science Fund’s official position.

https://www.fni.bg/

National Science Fund of Bulgaria