The Pseudovariety Generated by All Semigroups of Orientation-Preserving Transformations on a Finite Cycle. - Paula Maria Machado Cruz Catarino; Peter M. Higgins (Int. J. Algebra Comput., 2002)

Combinatorial Interpretation of Numbers in the Generalized Padovan Sequence and Some of Its Extensions. - Renata Passos Machado Vieira; Francisco Regis Vieira Alves; Paula Maria Machado Cruz Catarino (Axioms, 2022)

A Note on the Fuzzy Leonardo Numbers. - Elen Viviani Pereira Spreafico; Eudes Antonio Costa; Paula Maria Machado Cruz Catarino (TFSS, 2025)