1] dr Vlada Veljkovic Green synthesis of 5-nitroistin derivatives" - XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske, 08.09.2016.
(https://ekonferencije.com/sr1/rad/green-synthesis-of-5-nitroisti/4731)

2] dr Vlada Veljkovic THE IMPACT OF PROPYLENE GLYCOL AS COSOLVENT FOR THE CAO-CATALYZED ETHANOLYSIS OF SUNFLOWER OIL" - XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske, 18.07.2016.
(https://ekonferencije.com/sr1/rad/the-impact-of-propylene-glycol/4671)

3] dr Vlada Veljkovic DEEP EUTECTIC SOLVENT CHOLINE CHLORIDE-THIOUREA AS COSOLVENT IN CAO-CATALYZED SUNFLOWER OIL ETHANOLYSIS" - XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske, 18.07.2016.
(https://ekonferencije.com/sr1/rad/deep-eutectic-solvent-choline-/4669)

4] dr Vlada Veljkovic UTILIZATION OF WALNUT SHELL ASH AS A CATALYST FOR BIODIESEL SYNTHESIS" - XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske, 30.06.2016.
(https://ekonferencije.com/sr1/rad/utilization-of-walnut-shell-as/4513)