Todorov, Venelin
Dimov, Ivan
Ostromsky, Tzvetan
Apostolov, Stoyan
Georgieva, Rayna
Dimitrov, Yuri
Zlatev, Zahari
Funding for this research was provided by:
Bulgarian National Science Fund (KP-06-PM32/4-2019)
Bulgarian National Science Fun (ICT in SES, contract No DO1–205/23.11.2018)
Bulgarian National Science Fund (DN 12/5-2017)
Ministry of Education, Youth and Science (National Program - 2020 "Young scientists and Postdoctoral candidates")
Article History
Received: 29 December 2019
Accepted: 3 June 2020
First Online: 21 June 2020
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest.