| Issue Date | Title | Author(s) | Type | Access Type |
| 2015 | Algebraic properties of the set of operators with 0 in the closure of the numerical range | Diogo, C. | Article | Open Access |
| 2019 | A bridge between quaternionic and complex numerical ranges | Carvalho, L.; Diogo, C.; Mendes, S. | Article | Open Access |
| 2010 | Fredholmness of Toeplitz operators and corona problems | Câmara, M. C.; Diogo, C.; Rodman, L. | Article | Embargoed Access |
| 2015 | Hildebrandt's theorem for the essential spectrum | Bracic, J.; Diogo, C. | Article | Open Access |
| 2008 | Invertibility of Toeplitz operators and corona conditions in a strip | Câmara, M. C.; Diogo, C. | Article | Restricted Access |
| 2022 | A new perspective on the quaternionic numerical range of normal matrices | Carvalho, L.; Diogo, C.; Mendes, S. | Article | Open Access |
| 2024 | A note on the essential numerical range of block diagonal operators | Carvalho, L.; Diogo, C.; Mendes, S.; Soares, H. | Article | Open Access |
| 2019 | On the convexity and circularity of the numerical range of nilpotent quaternionic matrices | Carvalho, L.; Mendes, S.; Diogo, C. | Article | Open Access |
| 2024 | On the convexity of the quaternionic essential numerical range | Carvalho, L.; Diogo, C.; Mendes, S.; Soares, H. | Article | Open Access |
| 2024 | On the relation between S-spectrum and right spectrum | Carvalho, L.; Diogo, C.; Mendes, S.; Soares, H. | Article | Open Access |
| 2016 | Operators with a given part of the numerical range | Bracic, J.; Diogo, C. | Article | Open Access |
| 2025 | Quaternionic essential numerical range of complex operators | Carvalho, L.; Diogo, C.; Mendes, S.; Soares, H. | Article | Embargoed Access |
| 2021 | Quaternionic numerical range of complex matrices | Carvalho, L.; Diogo, C.; Mendes, S. | Article | Open Access |
| 2015 | Relative numerical ranges | Bracic, J.; Diogo, C. | Article | Open Access |
| 2023 | S-spectrum and numerical range of a quaternionic operator | Carvalho, L.; Diogo, C.; Mendes, S. | Article | Open Access |
| 2017 | Simultaneous zero inclusion property for spatial numerical ranges | Bracic, J.; Diogo, C. | Article | Embargoed Access |
| 2010 | Some properties of the kernel and the cokernel of Toeplitz operators with matrix symbols | Benhida, B.; Câmara, M. C.; Diogo, C. | Article | Embargoed Access |
| 2020 | The star-center of the quaternionic numerical range | Carvalho, L.; Diogo, C.; Mendes, S. | Article | Open Access |
| 2020 | Technologies and senior population: Challenges and opportunities | Alcobia, A.; Alturas, B.; Diogo, C. | Conference Object | Open Access |
| 2015 | Toeplitz operators of finite interval type and the table method | Câmara, M. C.; Diogo, C.; Spitkovsky, I. M. | Article | Open Access |
