1] prof Zdenka Stojanovska Influence of geological parameters on the concentration of indor radon in the city of Trebinje" - Contemporary Materials 2021 - Savremeni materijali, 02.08.2021.
(https://ekonferencije.com/sr1/rad/influence-of-geological-parame/6001)

2] prof Zdenka Stojanovska MEASUREMENT OF GAMMA DOSE RATE IN HOSPIALAS FOR REHABILITATION IN BULGARIA" - Contemporary Materials 2020 - Savremeni Materijali, 04.08.2020.
(https://ekonferencije.com/sr1/rad/measurement-of-gamma-dose-rate/5902)