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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. Svjetlana Janjić, Faculty of Technology Banja Luka,
Republic of Srpska, Bosnia and Herzegovina
2. Biljana Lazić, Institut za javno zdravstvo Republike Srpske,
Republic of Srpska, Bosnia and Herzegovina
3. Mirjana Kostić, Univerzitet u Beogradu, Tehnološko-metalurški fakultet, Serbia
Applied paper from author