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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. Milica Balaban, Prirodno-matematički fakultet Banja Luka,
Republic of Srpska, Bosnia and Herzegovina
2. Silvester Bolka, Fakultet za tehnologiju polimera , Slovenia
3. Vesna Antić, Univerzitet u Beogradu, Poljoprivredni fakultet, Serbia