Science and Economy, Culture and Education. Book of Abstracts of 40-th World Congress of Vine and Wine and 15-th Assembly of the OIV, 29 May- 02 June 2017, Sofia
(2017)
Business, Finance and Education. Section On New Innovations in Teaching and Management - NITM - 2016. The Sixth International Conference, 26-29 August 2016, Varna
(2016)