박성우 김재균 김은호 KIM YOUNG MAN 김영상 2024-01-13T12:31:59Z 2024-01-13T12:31:59Z 2021-09-29 https://pubs.kist.re.kr/handle/201004/106815 English engine oils PIXE XRF A study on the determination of engine oils by proton induced X-ray emission and X-ray fluorescence spectrometry. Conference 2 Interact 2002, pp.292 Interact 2002 292 292 KO