@article{CSIS_2025_22_1_a3,
     author = {Konstantinos Kelesidis and Leonidas Karamitopoulos and Dimitris A. Dervos},
     title = {A {New} {Course} {Difficulty} {Index} {(CDf):} {Framework} and {Application}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {22},
     number = {1},
     year = {2025},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2025_22_1_a3/}
}