Citations refer to the original publication, not to a Scieee localized version.
Pérez Jiménez, M. D. J. (2013). The P versus NP problem: Unconventional insights from Membrane Computing. IMCS: International Membrane Computing Society. https://idus.us.es/items/c3c3daf0-5bef-4187-9663-7541dd794d56
Pérez Jiménez, Mario de Jesús. The P versus NP problem: Unconventional insights from Membrane Computing. IMCS: International Membrane Computing Society, 2013. https://idus.us.es/items/c3c3daf0-5bef-4187-9663-7541dd794d56.
Pérez Jiménez, Mario de Jesús. The P versus NP problem: Unconventional insights from Membrane Computing. IMCS: International Membrane Computing Society, 2013. https://idus.us.es/items/c3c3daf0-5bef-4187-9663-7541dd794d56.
Pérez Jiménez, M. D. J. (2013) The P versus NP problem: Unconventional insights from Membrane Computing. IMCS: International Membrane Computing Society. Available at: https://idus.us.es/items/c3c3daf0-5bef-4187-9663-7541dd794d56.
M. D. J. Pérez Jiménez, “The P versus NP problem: Unconventional insights from Membrane Computing,” IMCS: International Membrane Computing Society, 2013. [Online]. Available: https://idus.us.es/items/c3c3daf0-5bef-4187-9663-7541dd794d56
@misc{perezjimenez2013versus,
author = {Pérez Jiménez, Mario de Jesús},
title = {The P versus NP problem: Unconventional insights from Membrane Computing},
year = {2013},
publisher = {IMCS: International Membrane Computing Society},
url = {https://idus.us.es/items/c3c3daf0-5bef-4187-9663-7541dd794d56}
}
The source metadata has no journal, volume or pages. Add them from the original publication if your citation needs them.