Serpa, G., Zumba, X., Montalvo, F., BaƱo, D., Martinez, J., & Zambrano, I. (2019). Influence of the type of spark plug in the evaluation of the performance and emissions caused in an ignition engine. Enfoque UTE, 10(2), pp. 115 - 125. https://doi.org/10.29019/enfoque.v10n2.465