Authors
Irina R. Iotova
Department of Chemistry, Faculty of Natural Sciences, “K. Preslavsky” University, Shumen, Bulgaria
Dobromir D. Enchev
Department of Chemistry, Faculty of Natural Sciences, “K. Preslavsky” University, Shumen, Bulgaria
© 2019 Irina R. Iotova, Dobromir D. Enchev, published by Konstantin Preslavski University of Shumen
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.