Matic-Petrovic Sanja,Zelic Ksenija,Milasin Jelena M,Popovic Branka M,Pucar Ana,Zelic Obrad B (2014) Detection of Herpes Simplex Virus Type 1 in Gingival Crevicular Fluid of Gingival Sulcus/Periodontal Pocket Using Polymerase Chain Reaction, SRPSKI ARHIV ZA CELOKUPNO LEKARSTVO, vol. 142, br. 5-6, str. 296-300 (Article) 

Lukovic Natalija,Zelic Obrad B,Cakic Sasa,Petrovic Vanja (2009) The Use of Beta-Tricalcium Phosphate and Bovine Bone Matrix in the Guided Tissue Regeneration Treatment of Deep Infra-Bony Defects, SRPSKI ARHIV ZA CELOKUPNO LEKARSTVO, vol. 137, br. 11-12, str. 607-612 (Article) 

Brkovic-Popovic Snezana,Stamenkovic Dragoslav S,Stanisic-Sinobad Darinka,Rakocevic Zoran B,Zelic Obrad B (2009) The Influence of Continuous Magnetic Field on Periodontal Tissues under Overdentures, SRPSKI ARHIV ZA CELOKUPNO LEKARSTVO, vol. 137, br. 7-8, str. 363-370 (Article) 

Zelic Obrad B,Cakic Sasa,Lukovic Natalija (2009) The Effect of Two Different Oral Antiseptics on Dental Plaque Formation (De Novo Biofilm) and on Gingival Inflammation, SRPSKI ARHIV ZA CELOKUPNO LEKARSTVO, vol. 137, br. 1-2, str. 6-9 (Article) 

Andjelski-Radicevic Biljana,Zelic Obrad B,Mirkovic Silvija,Todorovic Tatjana (2008) Periodontal condition in diabetics in Belgrade, VOJNOSANITETSKI PREGLED, vol. 65, br. 11, str. 799-802 (Article) 

Ristic Marija M,Svabic-Vlahovic Milena,Sasic Mirjana,Zelic Obrad B (2007) Clinical and microbiological effects of fixed orthodontic appliances on periodontal. tissues in adolescents, ORTHODONTICS & CRANIOFACIAL RESEARCH, vol. 10, br. 4, str. 187-195 (Article)