Authors
Armands Vekšins
Latvia University of Life Sciences and Technologies, Jelgava, Latvia
Oskars Kozinda
Latvia University of Life Sciences and Technologies, Jelgava, Latvia
© 2018 Armands Vekšins, Oskars Kozinda, published by Latvia University of Life Sciences and Technologies
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.