Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Zhu Lei and Shida Katsunori,Multi-Information Monitoring of Engine Oil Degradation Using a Single Optical Sensor System,IEEJ Transactions on Sensors and Micromachines,13418939,The Institute of Electrical Engineers of Japan,2004,124,8,289-294,https://cir.nii.ac.jp/crid/1390282679438438784,https://doi.org/10.1541/ieejsmas.124.289