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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. Gorana Mrđan, Prirodno-matematički fakultet u Novom Sadu, Serbia
2. Borko Matijević, Serbia
3. Đenđi Vaštag, Serbia
4. Suzana Apostolov, Univerzitet u Novom Sadu, Prirodno-matematički fakultet, Serbia
5. Aleksandar Marinković, Tehnološko-metalurški fakultet, Univerzitet u Beogradu, Srbija, Serbia
Applied paper from author