%0 Journal Article
%A Konstantinos Kelesidis
%A Leonidas Karamitopoulos
%A Dimitris A. Dervos
%T A New Course Difficulty Index (CDf): Framework and Application
%J Computer Science and Information Systems
%D 2025
%V 22
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CSIS_2025_22_1_a3/
%F CSIS_2025_22_1_a3