Language
Login
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 Marković, Academy of Technical-Educational Vocational Studies Nis - Vranje Department , Serbia
2. Goran Marković, Public Institution National University of Vranje, Serbia
3. Ivan Stevović, Innovation Center of the Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Republ, Serbia
Applied paper from author