You may also wish to search for items by Kuwana.
Only one matching reference was found.
Okada, M.; Higashi, Y.; Ikeda, T.; Kuwana, T., Measurements of the Surface Tension for HCFC-142b and HFC-152a in Proc. Symp. Thermophys. Prop., 12th, Japan, B111, 1991. [all data]