1. ms Biljana Đordević (2016) "THE IMPACT OF PROPYLENE GLYCOL AS COSOLVENT FOR THE CAO-CATALYZED ETHANOLYSIS OF SUNFLOWER OIL" - XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske
(https://ekonferencije.com/sr1/rad/the-impact-of-propylene-glycol/4671)

2. ms Biljana Đordević (2016) "DEEP EUTECTIC SOLVENT CHOLINE CHLORIDE-THIOUREA AS COSOLVENT IN CAO-CATALYZED SUNFLOWER OIL ETHANOLYSIS" - XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske
(https://ekonferencije.com/sr1/rad/deep-eutectic-solvent-choline-/4669)