Petrova, Nia
Todinova, Svetla
Paunov, Momchil
Kovács, Lászlo
Taneva, Stefka
Krumova, Sashka http://orcid.org/0000-0001-7412-8398
Funding for this research was provided by:
Bulgarian Academy of Sciences (DFNP 17-138)
Article History
Received: 1 October 2018
Accepted: 20 December 2018
First Online: 3 January 2019