1. Trajkovic M.: Comparative analysis of symptoms and objective findings in patients with intracranial tumors, 7th International Medical Student̕s Congress. July 19th-22nd 2012, Novi Sad, Republic of Serbia. Book of abstracts, 2012. 2. Trajkovic M.: Cerebral stroke in the brainstem and the occipitotemporal lobe: clinical picture, prognosis and outcome, 52. Congress Biomedicine Science Serbia. April 29th-01st May 2011, Budva, Montenegro. Book of abstract, 2011. 3. Trajković M., Vuleković P., Cigić T., Papić V., Krajčinović N., Horvat I., Karan M., Jelača B., Azaševac A., Đilvesi Đ.: Hirurško lečenje degenerativnih oboljenja cervikalnog segmenta kičmenog stuba na Klinici za neurohirurgiju Kliničkog centra Vojvodine, XII Kongres neurohirurga Srbije, 18-20. Septembar 2014, Kragujevac, Srbija. 4. Vucinic N., Savic J., Trajkovic M., Tomic N., Sudimac S., Sekulic T., Zbucnovic D., Vujcic M., Vuckovic S., Zrilic V.: Testing inheritance of palmaris longus muscle in our population, 52. Congress Biomedicine Science Serbia. April 29th-01st May 2011, Budva, Montenegro. Book of abstract, 2011. 5. Papic V., Cigic T., Bugarski V., Djilvesi Dj., Karan M., Vulekovic P., Horvat I., Jelaca B., Azasevac A., Trajkovic M.: Cognitive Impairment After Aneurysmal Subarachnoid Hemorrhage, 1st Congress of Southeast European Neurosurgical Society, 31st October – 2nd November 2013, Belgrade, Serbia.