B-Fredholm Spectra of Drazin Invertible Operators and Applications. - Elvis Aponte; Jhixon Macías; José Sanabria; José Soto (Axioms, 2021)

Tensor Product of Operators Satisfying Zariouh's Property (gaz), and Stability under Perturbations. - Elvis Aponte; Narayanapillai Jayanthi; Domingo Quiroz; Ponraj Vasanthakumar (Axioms, 2022)

Property (Bv) and Tensor Product. - Elvis Aponte; Ponraj Vasanthakumar; Narayanapillai Jayanthi (Symmetry, 2022)

On Semi-Continuous and Clisquish Functions in Generalized Topological Spaces. - Elvis Aponte; Vadakasi Subramanian; Jhixon Macías; Muthumari Krishnan (Axioms, 2023)

The Property (EA) and Local Spectral Theory. - Elvis Aponte; Lourival Lima; José Sanabria (Int. J. Math. Math. Sci., 2025)