Hilbert algebras with a necessity modal operator. - Sergio A. Celani; Daniela Montangie (Reports Math. Log., 2014)

Hilbert Algebras with a Modal Operator ◊. - Sergio A. Celani; Daniela Montangie (Stud Logica, 2015)

Algebraic semantics of the $ left { rightarrow , square right } $-fragment of Propositional Lax Logic. - Sergio A. Celani; Daniela Montangie (Soft Comput., 2020)

Hilbert Algebras with Hilbert-Galois Connections. - Sergio A. Celani; Daniela Montangie (Stud Logica, 2023)