Liquid-Phase p-ρ-T Data for 2,3,3,3-Tetrafluoroprop-1-ene (R-1234yf) and 1,1,2,3,3,3-Hexafluoroprop-1-ene (R-1216) at Temperatures from (208 to 353) K under Pressures up to 40 MPa Klomfar, J.; Součková, M.; Pátek, J.; Journal of Chemical & Engineering Data 2012, 57, 3283-3289