Mijac V, Opavski N, Markovic M, Gajic I, Vasiljevic Z, Sipetic T, Bajcetic M. Trends in macrolide resistance of respiratory tract pathogens in the paediatric population in Serbia from 2004 to 2009. Epidemiology and Infection. 2015; 143, pp 648-652.

Opavski N, Gajic I, Borek AL, Obszańska K, Stanojevic M, Lazarevic I, Ranin L, Sitkiewicz I, Mijac V. Molecular characterization of macrolide resistant Streptococcus pyogenes isolates from pharyngitis patients in Serbia. Infect Genet Evol. 2015; 33:246-52.

Gajić I, Mijač V, Ranin L, Stanojević M, Lazerević I, Šmitran A, Hadnađev M, Opavski N. Distribution of macrolide resistant genes among isolates of macrolide resistant Streptococcus pyogenes and Streptococcus pneumoniae in Serbia. Serbia. Arch. Biol. Sci. 2014.; 66(1): 93-98. (preuzmi)

Hadnađev M, Gajić I, Mijač V, Kurucin T, Považan A, Vulin A, Opavski N. Phenotypes and genotypes of macrolide resistant Streptococcus pneumoniae in Serbia. Arch. Biol. Sci. 2014.; 66(1): 99-105. (preuzmi)

Mijač V, Opavski N, Marković M, Gajić I, Vasiljević Z, Sipetić T, Bajcetić M. Trends in macrolide resistance of respiratory tract pathogens in the paediatric population in Serbia from 2004 to 2009. Epidemiol Infect. 2014 May 9:1-5.

Šmitran A, Opavski N, Erić Marinković J, Gajić I, Ranin L. Adherence and biofilm production of invasive and non-invasive isolates of Streptococcus pyogenes after hyaluronidase treatment. Arch. Biol. Sci. 2013.; 65(4): 1353-1361. (preuzmi)

Gajic I, Mijac V, Ranin L, Anđelković D, Radičević M, Opavski N. Invazivni sojevi Streptococcus pneumoniae u Srbiji: osetljivost na antibiotike i serotipovi. Srp. Arh. Celok Lek. 2013; 141(1-2): 46-51. (preuzmi)

Opavski N, Mijač V, Gajic I, Stanojević M, Ranin L. Genetic diversity of macrolide resistant group A streptococci. Current diagnostic and therapeutic dilemmas in the clinical management of Group A Streptococcal infections, Rome 2013, 34.

Mijač V, Opavski N, Gajic I, Ranin L. Invasive pneumococcal diseases in Serbia: serotype distribution and antimicrobial susceptibility. 23^rdECCMID, Berlin 2013, eP730.

Gajić I, Opavski N, Mijač V, Ranin L. Macrolide-resistant phenotypes of invasive Streptococcus pneumoniae isolates in Serbia. Arch. Biol. Sci. 2012; 64(4): 1377-1382. (preuzmi)

Gajic I, Mijač V, Ranin L, Opavski N. Phenotypes of macrolide-resistant invasive Streptococcus pneumoniae isolates in Serbia. Mikrobiologia Balkanika 2011, 7^th Balkan Congress of Microbiology, Belgrade 2011.

Opavski N, Mijač V, Gajic I, Heuberger S, Ranin L. Antimicrobial susceptibility and serotype distribution of invasive Streptococcus pneumoniae isolates in Serbia. XVIII Lancefield International Symposium, Palermo 2011.

Gajic I, Mijač V, Lazarević I, Stanojević M, Opavski N. Emm types distribution of macrolide-resistant GAS from pharyngitis patients in Serbia. 21^th ECCMID, Milan 2011.

Mijač V, Ranin L, Marković M, Heeg C, Reinert R. R, Opavski N. Distribution of emm types among group A streptococcal isolates from Serbia. Clin Microbiol Infect. 2010; 16: 295–298.

Opavski N, Gajic I. Current strategies in group A streptococci typing and distribution of Streptococus pyogenes serotypes in Serbia in the period 1991- 2007”, 6^thBalkan Congress of Microbiology, Ohrid 2009.

Opavski N, Mijac̆ V, Ćirković I, Feucht H. H, Ranin L. Biotypes of group A streptococci from patients with pharyngitis and soft tissue infections. Clin. Micro Inf. 2007; 3: 320–322.

Opavski N, Djukic S, Mijac V, Vera D, Ranin L. Influence of decreased penicillin susceptibility on growth rate of beta haemolytic streptococci. Indian J Med Res. 2004; 119: 237-241.

R Lazar, Opavski N,Djukic S, Mijac V, Vera D. Epidemiology of diseases caused by Streptococcus pyogenes in Serbia during a nine-year period (1991-1999). Indian J Med Res. 2004; 119: 155-159.