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Author(s):
1. Biljana Pećanin, Univerzitet u Banjoj Luci, Tehnološki fakultet,
Republic of Srpska, Bosnia and Herzegovina
2. Branka Ružičić, University of Banja Luka, Faculty of Technology,
Republic of Srpska, Bosnia and Herzegovina
3. Slavica Maletić, Univerzitet u Beogradu, Fizički fakultet, Studentski trg 12, Beograd, Serbia
4. Dragana Cerović, University of Belgrade, Faculty of Physics, Serbia
5. Ivan Petronijević, Univerzitet u Beogradu, Fizički fakultet, Studentski trg 12, Beograd, Serbia
6. Dragana Grujić, Faculty of Technology Banja Luka,
Republic of Srpska, Bosnia and Herzegovina
7. Blanka Škipina, Faculty of Technology Banja Luka,
Republic of Srpska, Bosnia and Herzegovina
Applied paper from author