Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ito Masayuki and Tai Hidekazu and Kobayashi Tsutomu,K-6 Viscometer of noncontact type using aerial sound,Proceedings of Symposium on Ultrasonic Electronics,1348-8236,Institute for Ultrasonic Elecronics,2006-11-15,27,0,369-370,https://cir.nii.ac.jp/crid/1390282763067663616,https://doi.org/10.24492/use.27.0_369