1] prof Ljubisa Nikolic ANALYSIS OF RESIDUAL REACTANTS FROM SYNTHESIZED POLY(ACRYLIC ACID-co-METHACRYLIC ACID)" - XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske, 18.05.2016.
(https://ekonferencije.com/sr/rad/analysis-of-residual-reactants/4240)

2] prof Ljubisa Nikolic SYNTHESIS AND CHARACTERIZATION OF COPOLYMER HYDROGELS BASED ON ACRYLIC AND METHACRYLIC ACID" - XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske, 18.05.2016.
(https://ekonferencije.com/sr/rad/synthesis-and-characterization/4239)