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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. Milutin M. Živković, Akademija strukovnih studija Šumadija (ASSŠ) – Odsek Trstenik, 37240 Trstenik, Serbia
2. Milan Milosavljevic, Albania
3. Predrag Dašić, SaTCIP Publisher Ltd., 36610 Vrnjačka Banja i Visoka tehnička mašinska škola strukovnih studija (VTM, Serbia