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Severity: Notice
Message: Undefined offset: 0
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. Darko Manjenčić, business organization Novohem, Serbia
2. Vladan Mićić, Faculty of Technology - University of East Sarajevo,
Republic of Srpska, Bosnia and Herzegovina
3. Pero Dugić, Faculty of Technology Banja Luka,
Republic of Srpska, Bosnia and Herzegovina
Applied paper from author