The (Tetra) Category of Pseudocategories in an Additive 2-category with Kernels. - Nelson Martins-Ferreira (Appl. Categorical Struct., 2010)

A Note on the "Smith is Huq" Condition. - Nelson Martins-Ferreira; Tim Van der Linden (Appl. Categorical Struct., 2012)

A Decomposition Formula for the Weighted Commutator. - Nelson Martins-Ferreira; Tim Van der Linden (Appl. Categorical Struct., 2014)

Semidirect Products and Split Short Five Lemma in Normal Categories. - Nelson Martins-Ferreira; Andrea Montoli; Manuela Sobral (Appl. Categorical Struct., 2014)

A procedure for computing the symmetric difference of regions defined by polygonal curves. - Miguel Belbut Gaspar; Nelson Martins-Ferreira (J. Symb. Comput., 2014)

On Algebraic and More General Categories Whose Split Epimorphisms Have Underlying Product Projections. - James Richard Andrew Gray; Nelson Martins-Ferreira (Appl. Categorical Struct., 2015)

Further Remarks on the "Smith is Huq" Condition. - Nelson Martins-Ferreira; Tim Van der Linden (Appl. Categorical Struct., 2015)

New Wide Classes of Weakly Mal'tsev Categories. - Nelson Martins-Ferreira (Appl. Categorical Struct., 2015)

On the "Smith is Huq" Condition in S-Protomodular Categories. - Nelson Martins-Ferreira; Andrea Montoli (Appl. Categorical Struct., 2017)

Normalized Bicategories Internal to Groups and more General Mal'tsev Categories. - Nelson Martins-Ferreira (Appl. Categorical Struct., 2017)

On some categorical-algebraic conditions in S-protomodular categories. - Nelson Martins-Ferreira; Andrea Montoli; Manuela Sobral (Log. Methods Comput. Sci., 2017)

A Unified Classification Theorem for Mal'tsev-Like Categories. - Nelson Martins-Ferreira (Appl. Categorical Struct., 2020)

Schreier split extensions of preordered monoids. - Nelson Martins-Ferreira; Manuela Sobral (J. Log. Algebraic Methods Program., 2021)

On the Structure of Topological Spaces. - Nelson Martins-Ferreira (Axioms, 2022)

The third cohomology group of a monoid and admissible abstract kernels. - Nelson Martins-Ferreira; Andrea Montoli; Alex Patchkoria; Manuela Sobral (Int. J. Algebra Comput., 2022)

On the Structure of an Internal Groupoid. - Nelson Martins-Ferreira (Appl. Categorical Struct., 2023)