Directional DD-classifiers under non-rotational symmetry. - Houyem Demni; Giovanni Camillo Porzio (MFI, 2021)

Distance-based directional depth classifiers: a robustness study. - Houyem Demni; Amor Messaoud; Giovanni Camillo Porzio (Commun. Stat. Simul. Comput., 2023)

Theory of angular depth for classification of directional data. - Stanislav Nagy; Houyem Demni; Davide Buttarazzi; Giovanni Camillo Porzio (Adv. Data Anal. Classif., 2024)

A clusterability test for directed graphs. - Mario R. Guarracino; Pierre Miasnikof; Alexander Y. Shestopaloff; Houyem Demni; Cristián Bravo; Yuri A. Lawryshyn (CoRR, 2025)