Citations refer to the original publication, not to a Scieee localized version.
Gerlach Mena, P. J. (2015). Monstruos de Weierstrass. https://idus.us.es/items/2bc572dc-0736-4348-8795-29832952debb
Gerlach Mena, Pablo José. Monstruos de Weierstrass. 2015. https://idus.us.es/items/2bc572dc-0736-4348-8795-29832952debb.
Gerlach Mena, Pablo José. Monstruos de Weierstrass. 2015. https://idus.us.es/items/2bc572dc-0736-4348-8795-29832952debb.
Gerlach Mena, P. J. (2015) Monstruos de Weierstrass. Available at: https://idus.us.es/items/2bc572dc-0736-4348-8795-29832952debb.
P. J. Gerlach Mena, “Monstruos de Weierstrass,” 2015. [Online]. Available: https://idus.us.es/items/2bc572dc-0736-4348-8795-29832952debb
@misc{gerlachmena2015monstruos,
author = {Gerlach Mena, Pablo José},
title = {Monstruos de Weierstrass},
year = {2015},
url = {https://idus.us.es/items/2bc572dc-0736-4348-8795-29832952debb}
}
The source metadata has no journal, volume or pages. Add them from the original publication if your citation needs them.