'''''' ' (Bulgarian Universities and the Opportunities of the Operational Program 'Science and Education for Smart Growth')
Keyword(s):
2019 ◽
pp. 185-194
Keyword(s):
2015 ◽
Vol 6
(12)
◽
pp. 2128-2136
◽
2020 ◽
Vol 40
(2)
◽
pp. 53-65