Ivanov, Atanas Valev http://orcid.org/0000-0003-1981-3821
Fidanov, Dimitar Vaskov
Gocheva-Ilieva, Snezhana Georgieva
Funding for this research was provided by:
NPD at University of Plovdiv Paisii Hilendarski (MU19-FMI-010)
NCDSC part of the Bulgarian National Roadmap on RIs (D01-271/16.12.2019)
Article History
Received: 31 May 2020
Accepted: 31 December 2020
First Online: 28 January 2021