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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. Jelena Đorđević, Fakultet inženjerskih nauka, Univerzitet u Kragujevcu, Sestre Janjić 6, 34000 Kragujevac, Srbija, Serbia
2. Strahinja Milenković, Institute for Information Technologies, University of Kragujevac, 34000 Kragujevac, Serbia, Serbia
3. Nenad Grujović, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
4. Fatima Živić, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
Applied paper from author