1. mr Igor Budak (2017) "RESTORATION AND CONSERVATION OF SIGNIFICANT RIFLE FROM I. WORLD WAR " - 13th International Conference on Accomplishments in Mechanical and Industrial Engineering
(https://ekonferencije.com/hr/rad/restoration-and-conservation-o/4852)

2. mr Igor Budak (2017) "ENVIRONMENTAL LABELLING WITH TYPE I ECO LABELS" - 13th International Conference on Accomplishments in Mechanical and Industrial Engineering
(https://ekonferencije.com/hr/rad/environmental-labelling-with-t/4849)

3. mr Igor Budak (2017) "Development of innovative methodology for ecodesign of products and processes for the region of Vojvodina" - 13th International Conference on Accomplishments in Mechanical and Industrial Engineering
(https://ekonferencije.com/hr/rad/development-of-innovative-meth/4787)

4. mr Igor Budak (2015) "LCA Method as an useful Tool in Production Engineering" - 12. Međunarodna konferencija o dostignućima elektrotehnike, mašinstva i informatike
(https://ekonferencije.com/hr/rad/lca-method-as-an-useful-tool-i/3053)