1.
Agustini S, Arafah K, Sanusi DK, Salmah S, Faisal R, Fitria N. Analysis of the difficulty level of physics cognitive test items using the Rasch approach: Implementation of analysis with R Software. PSSJ [Internet]. 2026 Apr. 20 [cited 2026 Apr. 20];6(4):433-44. Available from: https://www.journal.privietlab.org/index.php/PSSJ/article/view/1036