TY  - CHAP
UR  - https://doi.org/10.1351/goldbook.A00296
AU  - International Union of Pure and Applied Chemistry (IUPAC)
YR  - 2019
TI  - amount fraction <em>x</em> (<em>y</em> for gaseous mixtures)
DO  - 10.1351/goldbook.A00296
WV  - 3.0.1