Manev, Mancho http://orcid.org/0000-0001-6181-8955
Funding for this research was provided by:
Plovdiv University “Paisii Hilendarski” (MU21-FMI-008, FP21-FMI-002)
Article History
Received: 13 August 2020
Accepted: 8 June 2022
First Online: 18 June 2022
Declarations
:
: The author declares no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.