1.
Horvat S, Rodić D, Segedinac M, Rončević T. Evaluation of Cognitive Complexity of Tasks for the Topic Hydrogen Exponent in the Solutions of Acids and Bases. JoSD [Internet]. 19Feb.2018 [cited 19Nov.2019];2(1):33-5. Available from: http://aes.bio.bg.ac.rs/index.php/JSD/article/view/198