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Authors

Dragomir Marchev

d.marchev@shu.bg

University of Shumen, Faculty of Natural Sciences, Department of Physics and Astronomy, Shumen, Bulgaria

Kiril Stoyanov

kstoyanov@astro.bas.bg

Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, Sofia, Bulgaria

Vladislav Marchev

vmarchev@astro.bas.bg

University of Shumen, Faculty of Natural Sciences, Department of Physics and Astronomy, Shumen, Bulgaria
Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, Sofia, Bulgaria

Radoslav Zamanov

rkz@astro.bas.bg

Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, Sofia, Bulgaria

Borislav Borisov

b.borisov@shu.bg

University of Shumen, Faculty of Natural Sciences, Department of Physics and Astronomy, Shumen, Bulgaria

Doroteq Vasileva

d.vasileva@shu.bg

University of Shumen, Faculty of Natural Sciences, Department of Physics and Astronomy, Shumen, Bulgaria

Teodora Atanasova

t.atanasova@shu.bg

University of Shumen, Faculty of Natural Sciences, Department of Physics and Astronomy, Shumen, Bulgaria

Nataliya Pavlova

n.pavlova@shu.bg

University of Shumen, Faculty of Mathematics and Informatics, Department of Algebra and Geometry, Shumen, Bulgaria
DOI: https://doi.org/10.2478/asn-2022-0017 | Journal eISSN: 2603-347X | Journal ISSN: 2367-5144
Language: English
Page range: 1 - 9
Published on: Nov 1, 2022
Published by: Konstantin Preslavski University of Shumen
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2022 Dragomir Marchev, Kiril Stoyanov, Vladislav Marchev, Radoslav Zamanov, Borislav Borisov, Doroteq Vasileva, Teodora Atanasova, Nataliya Pavlova, published by Konstantin Preslavski University of Shumen
This work is licensed under the Creative Commons Attribution 3.0 License.