Nuić, Ines, and Saša Aleksej Glažar. 2015. “Application of Web-Based Learning Material for Teaching States of Matter in 8th Grade Primary School Chemistry – A Pilot Study Results”. Bulletin of Chemists and Technologists of Bosnia and Herzegovina 45 (December): 43-50. https://glashem.pmf.unsa.ba/index.php/bctbh/article/view/161.