1. prof Dejan Mitrovic (2017) "SPATIAL ORIENTATION USING VIRTUAL REALITY, CASE OF FACULTY OF MECHANICAL ENGINEERING" - 13th International Conference on Accomplishments in Mechanical and Industrial Engineering
(https://ekonferencije.com/sr1/rad/spatial-orientation-using-virt/4999)

2. prof Dejan Mitrovic (2017) "Investigation of wood biomass market in southeast Serbia" - 13th International Conference on Accomplishments in Mechanical and Industrial Engineering
(https://ekonferencije.com/sr1/rad/investigation-of-wood-biomass-/4881)