Encheva, Marta http://orcid.org/0000-0002-4739-6714
Djambazov, Slaveyko http://orcid.org/0000-0002-9224-9588
Vekov, Toni http://orcid.org/0000-0001-5033-009X
Golicki, Dominik http://orcid.org/0000-0001-7741-4760
Article History
Received: 24 September 2019
Accepted: 11 August 2020
First Online: 19 August 2020