Citations refer to the original publication, not to a Scieee localized version.
Misas Arcos, M. (2021). Relatividad general con Matlab. https://idus.us.es/items/db282d00-4f94-4897-ba12-57ffe2ce2fed
Misas Arcos, Mario. Relatividad general con Matlab. 2021. https://idus.us.es/items/db282d00-4f94-4897-ba12-57ffe2ce2fed.
Misas Arcos, Mario. Relatividad general con Matlab. 2021. https://idus.us.es/items/db282d00-4f94-4897-ba12-57ffe2ce2fed.
Misas Arcos, M. (2021) Relatividad general con Matlab. Available at: https://idus.us.es/items/db282d00-4f94-4897-ba12-57ffe2ce2fed.
M. Misas Arcos, “Relatividad general con Matlab,” 2021. [Online]. Available: https://idus.us.es/items/db282d00-4f94-4897-ba12-57ffe2ce2fed
@misc{misasarcos2021relatividad,
author = {Misas Arcos, Mario},
title = {Relatividad general con Matlab},
year = {2021},
url = {https://idus.us.es/items/db282d00-4f94-4897-ba12-57ffe2ce2fed}
}
The source metadata has no journal, volume or pages. Add them from the original publication if your citation needs them.