CC-BY-NC-NDMilijić, NenadStefanović, GoranZvonimir Stanković2023-12-272023-12-272009978-86-80987-69-9http://www.eco-ist.rs/Zbornik%20radova%20EkoIst%202009.pdfhttps://repozitorijum.tfbor.bg.ac.rs/handle/123456789/5031abstractenconferenceObject