1] dr G Sazhko THE INFLUENCE OF RENEWABLE SOURCES OF ENERGY TO THE CLIMATE CHANGES IN THE BOSNIA&HERZEGOVINA; AND THE REPUBLIC OF SRPSKA" - Contemporary Materials 2016 - Savremeni Materijali, 05.07.2016.
(https://ekonferencije.com/sr1/rad/the-influence-of-renewable-sou/4568)

2] dr G Sazhko ELECTRICITY GENERATED BY POLYCRYSTALLINE SILICON PV MODULES AS FAÇADE ELEMENTS" - Contemporary Materials 2016 - Savremeni Materijali, 04.07.2016.
(https://ekonferencije.com/sr1/rad/electricity-generated-by-polyc/4559)