Business, Finance and Education. Section On New Innovations in Teaching and Management - NITM - 2016. The Sixth International Conference, 26-29 August 2016, Varna
(2016)
Special lectures presented at the International Symposium on the chemistry of natural products held in Melbourne, Canberra and Sydney, Australia, August 1960 and organized by the Austrelian Academy of Science
(1961)
