Citations refer to the original publication, not to a Scieee localized version.
Linares Barranco, B., Rodríguez Vázquez, Á. B., Sánchez Sinencio, E., & Huertas Díaz, J. L. (1991). Frequency tuning loop for VCOs. Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ISCAS.1991.176082
Linares Barranco, Bernabé, et al. Frequency tuning loop for VCOs. Institute of Electrical and Electronics Engineers, 1991. https://doi.org/10.1109/ISCAS.1991.176082.
Linares Barranco, Bernabé, Ángel Benito Rodríguez Vázquez, Edgar Sánchez Sinencio, and José Luis Huertas Díaz. Frequency tuning loop for VCOs. Institute of Electrical and Electronics Engineers, 1991. https://doi.org/10.1109/ISCAS.1991.176082.
Linares Barranco, B. et al. (1991) Frequency tuning loop for VCOs. Institute of Electrical and Electronics Engineers. Available at: https://doi.org/10.1109/ISCAS.1991.176082.
B. Linares Barranco, Á. B. Rodríguez Vázquez, E. Sánchez Sinencio, and J. L. Huertas Díaz, “Frequency tuning loop for VCOs,” Institute of Electrical and Electronics Engineers, 1991, doi: 10.1109/ISCAS.1991.176082.
@misc{linaresbarranco1991frequency,
author = {Linares Barranco, Bernabé and Rodríguez Vázquez, Ángel Benito and Sánchez Sinencio, Edgar and Huertas Díaz, José Luis},
title = {Frequency tuning loop for VCOs},
year = {1991},
publisher = {Institute of Electrical and Electronics Engineers},
doi = {10.1109/ISCAS.1991.176082},
url = {https://doi.org/10.1109/ISCAS.1991.176082}
}
The source metadata has no journal, volume or pages. Add them from the original publication if your citation needs them.