Tsoncheva, Tanya
Spassova, Ivanka
Issa, Gloria
Ivanova, Radostina
Kovacheva, Daniela
Paneva, Daniela
Karashanova, Daniela
Velinov, Nikolay
Tsyntsarski, Boiko
Georgieva, Biliana
Dimitrov, Momtchil
Petrov, Nartzislav
Funding for this research was provided by:
Bulgarian National Science Fund (КП-06-Н27/9)
Article History
Received: 31 October 2019
Accepted: 18 May 2020
First Online: 23 May 2020