Turlakova, Teodorina Zhelyazkova, Slavova, Gergana Georgieva, Georgieva, Tanya Nikolova Opportunities for Cross-border Cooperation between Bulgaria and Romania: The Case of the Interreg Programe,
Trakia University, 2019, pp. 471 - 479, ISSN 1313-7069 (print) ; 1313-3551 (online).