| 2026 | ICCSA | Appell-Vietoris Polynomials: Structural Properties and Zero Bounds. | Isabel Cao, M. Irene Falco, Helmuth R. Malonek, Graa Tomaz |
| 2025 | ICCSA | Pascal Trapezoids as Wigner Numbers and Some Combinatorial Properties. | Isabel Cao, M. Irene Falco, Helmuth R. Malonek, Graa Tomaz |
| 2024 | ICCSA | On Appell-Vietoris Polynomials. | Isabel Cao, M. Irene Falco, Helmuth R. Malonek, Fernando Miranda, Graa Tomaz |
| 2023 | ICCSA | Remarks on the Vietoris Sequence and Corresponding Convolution Formulas. | Isabel Cao, M. Irene Falco, Helmuth R. Malonek, Fernando Miranda, Graa Tomaz |
| 2022 | ICCSA | Non-symmetric Number Triangles Arising from Hypercomplex Function Theory in $\mathbb {R}^{n+1}$. | Isabel Cao, M. Irene Falco, Helmuth R. Malonek, Graa Tomaz |
| 2017 | ICCSA | Shifted Generalized Pascal Matrices in the Context of Clifford Algebra-Valued Polynomial Sequences. | Isabel Cao, Helmuth R. Malonek, Graa Tomaz |
| 2014 | ICCSA | An Orthogonal Set of Weighted Quaternionic Zernike Spherical Functions. | Isabel Cao, Joo Morais |
| 2011 | ICCSA | On Generalized Hypercomplex Laguerre-Type Exponentials and Applications. | Isabel Cao, M. Irene Falco, Helmuth R. Malonek |
| 2011 | ICCSA | On an Hypercomplex Generalization of Gould-Hopper and Related Chebyshev Polynomials. | Isabel Cao, Helmuth R. Malonek |