1. mr Ljubica Bojanić (2019) "A COMPARATIVE ANALYSIS OF THE CONTENTS OF CALCIUM, MAGNESIUM AND TOTAL HARDNESS INPURIFIED WATER AND WATER FOR INJECTION" - Contemporary Materials 2019 - Savremeni Materijali
(https://ekonferencije.com/sr1/rad/a-comparative-analysis-of-the-/5738)

2. mr Ljubica Bojanić (2018) "SODIUM IN DRINKING WATER" - Contemporary Materials 2018 - Savremeni Materijali
(https://ekonferencije.com/sr1/rad/sodium-in-drinking-water/5575)

3. mr Ljubica Bojanić (2017) "ANALYSIS OF THE CONTENTS OF CALCIUM, MAGNESIUM AND TOTAL HARDNESS IN WATER FOR PHARMACEUTICAL PURPOSES" - Contemporary Materials 2017 - Savremeni Materijali
(https://ekonferencije.com/sr1/rad/analysis-of-the-contents-of-ca/5143)