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Severity: Notice
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Filename: controllers/presentation.php
Line Number: 875
Severity: Notice
Message: Trying to get property of non-object
Filename: controllers/presentation.php
Line Number: 875
Author(s):
1. Sonja Ketin, Faculty of Maritime Academic Studies, Belgrade, Belgrade 2- University of Defense of Belgrade, Milit, Serbia
2. Rade Biočanin, Državni univerzitet u Novom Pazaru, Novi Pazar, Serbia
3. Marko Andrejić, 3- Fakultet za upravljanje projektima i Inovacijama - Univerzitet Edukons, Srbija, Serbia
Applied paper from author