Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Imai Tadao and Sasaki Kyuro and Miyakoshl Hiroshi,Ultrasonic Attenuation in Ethylene and Air Gas Mixtures ,Journal of Japan Society for Safety Enginennring,05704480,Japan Soceiety for Safety Engineering,1992-02-15,31,1,15-21,https://cir.nii.ac.jp/crid/1390282681221480064,https://doi.org/10.18943/safety.31.1_15