1] prof Dragan Karadžić The most important parasitic fungi associated with cankers (on the bark and stem), galls and witches' brooms on forest trees in Serbia" - Forest Science for Sustainable Development of Forests
25 Years of Forestry of the Republic of Srpska, 01.08.2017.
(https://ekonferencije.com/hr/rad/the-most-important-parasitic-f/5323)

2] prof Dragan Karadžić Pathogenicity of Phytophthora species to Acer pseudoplatanus L. in Serbia" - Forest Science for Sustainable Development of Forests
25 Years of Forestry of the Republic of Srpska, 27.06.2017.
(https://ekonferencije.com/hr/rad/pathogenicity-of-phytophthora-/5208)