Putri, Mala Desrinda Dwi, Rifai Slamet, and Frida Agung Rakhmadi. 2019. “Characteristics Between New Oil and Used Oil by Using Laser Light Intensity and Lux Meter”. Proceeding International Conference on Science and Engineering 2 (March):111-12. https://doi.org/10.14421/icse.v2.65.