Saitoh, K.; Spirig, C. .; Edebeli, J.; Anet, J. G.; Kikuchi, Y.; Toyama, S.; Miwa, M.; Matsuyama, S.; Fushimi, A.; Takegawa, N. Information on Elemental and Ionic Components Obtained from Aircraft Engine Smoke Number Filter Sample. EJAS 2021, 9, 242-255.