Indecomposable tournaments and their indecomposable subtournaments on 5 and 7 vertices. - Houmem Belkhechine; Imed Boudabbous (Ars Comb., 2013)

Les graphes (-1)-critiques. - Houmem Belkhechine; Imed Boudabbous; Mohamed Baka Elayech (Ars Comb., 2015)

Decomposability index of tournaments. - Houmem Belkhechine (Discret. Math., 2017)

Criticality of switching classes of reversible 2-structures labeled by an Abelian group. - Houmem Belkhechine; Pierre Ille; Robert E. Woodrow (Discuss. Math. Graph Theory, 2017)

Decomposability and co-modular indices of tournaments. - Houmem Belkhechine; Cherifa Ben Salha (Discret. Math., 2021)

Making a Tournament Indecomposable by One Subtournament-Reversal Operation. - Houmem Belkhechine; Cherifa Ben Salha (Graphs Comb., 2021)

Partially Pair-critical Digraphs. - Houmem Belkhechine; Jamel Dammak; Rachid Sahbani (J. Multiple Valued Log. Soft Comput., 2021)

Prime orientable graphs. - Houmem Belkhechine (Discret. Math., 2022)

Birecognition of prime graphs, and minimal prime graphs. - Houmem Belkhechine; Cherifa Ben Salha; Pierre Ille (Discret. Math. Algorithms Appl., 2022)

Irreducible Pairings and Indecomposable Tournaments. - Houmem Belkhechine; Cherifa Ben Salha; Rim Romdhane (Graphs Comb., 2024)

Subprime and superprime graphs. - Houmem Belkhechine; Cherifa Ben Salha; Rim Romdhane (Discret. Appl. Math., 2025)