@article{Ali_Maksum_Fernandez_2020, title={Analisis Perbandingan Kekerasan Beberapa Merk Katup Sepeda Motor Matic}, volume={1}, url={http://aeej.ppj.unp.ac.id/index.php/aeej/article/view/11}, DOI={https://doi.org/10.24036/aeej.v1i2.11}, number={2}, journal={AEEJ : Journal of Automotive Engineering and Vocational Education}, author={Ali, Arif and Maksum, Hasan and Fernandez, Donny}, year={2020}, month={Dec.}, pages={75-84}