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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. Svetislav Savović, Univerzitet u Kragujevcu, Prirodno-matematički fakultet, , Serbia
2. Alexandar Djordjevich, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong Hong Kong, Kowloon, Hong Kong
3. Aco Janicijević, Tehnološko-metalurški fakultet, Univerzitet u Beogradu, Srbija, Serbia